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# 421

Number 421 (four hundred twenty-one) is an odd three-digits prime number and natural number following 420 and preceding 422.

## Properties of the number 421

 Nominal 421 Cardinal four hundred twenty-one Cardinalfour hundred twenty-one Ordinal 421st Number of digits 3 Sum of digits 7 Product of digits 8 Number parity Odd
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## Prime Factorization of 421

 Prime factorization 421 Prime factors 421 Number of distinct prime factors ω(n) 1 Total number of prime factors Ω(n) 1 Sum of prime factors 421 Product of prime factors 421
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## Divisors of 421

 List of proper divisors 1 List of all dividers 1, 421 Number of divisors d(n) 2 Sum of all divisors σ(n) 422 Aliquot sum 1 421 is a deficient number , since it is larger than the sum of its proper divisors (1). Its deficiency is 420.
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## Prime numbers

 Is 421 a prime number? Yes Is 421 a semiprime number? No Is 421 a Chen prime number? No Is 421 a Mersenne prime number? No
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## Sequences

 Is 421 a Catalan number? No Is 421 a Fibonacci number? No Is 421 a Idoneal number? No
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## Number theory

Number theory is a branch of pure mathematics devoted primarily to the study of the integers and integer-valued functions.
 421 is not a Happy number 421 is not a Humble number 421 is not a Münchhausen number 421 is not a Perfect number 421 is not a Perfect square 421 is not a Palindrome
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## Numeric Bases of 421

In mathematics, a base or radix of a numeral system is the number of unique digits, including zero, used to represent numbers in that system.
BaseSystemValue
2Binary1101001012
3Ternary1201213
4Quaternary122114
5Quinary31415
6Senary15416
7Septenary11417
8Octal6458
9Nonary5179
10Decimal421
12Duodecimal2b112
20Vigesimal11120
36Base36bp36
60Sexagesimal7160
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## Mathematical operations

Mathematical operations are actions that are performed on numbers or mathematical expressions to find a numerical result.
 Square of 421 (n2) 177241 Cube of 421 (n3) 7.46185e+07 Square root of 421 20.5183 Natural Logarithm (ln) of 421 6.04263 Decimal Logarithm (log) of 421 2.62428
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## Trigonometry

Trigonometry is the study of the relationship between the angles and sides of a triangle.
 Sine of 421 0.0265813 Cosecant of 421 37.6204 Cosine of 421 0.999647 Secant of 421 1.00035 Tangent of 421 0.0265907 Cotangent of 421 37.6072
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## Number parity

Parity is the property of an integer of whether it is even or odd.

No

### Is 421 an Odd Number?

Yes, the number 421 is an odd number.
Total number of all odd numbers from 1 to 421 is 211
Sum of all the odd numbers from 1 to 421 are 44521
The sum of all odd numbers is a perfect square: 44521 = 211
An odd number is any integer (a whole number) that cannot be divided by 2 evenly. Odd numbers are the opposite of even numbers.
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## Ban number

In recreational mathematics, a ban number is a number that does not contain a particular letter when spelled out in English; in other words, the letter is "banned".
 The spelling of 421 in words is "four hundred twenty-one", meaning that: 421 is an aban number (a number without the letter a) 421 is not an eban number (as it contains the letter e) 421 is an iban number (a number without the letter i) 421 is not an oban number (as it contains the letter o) 421 is not a tban number (as it contains the letter t) 421 is not an uban number (as it contains the letter u)
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## Numeral systems

How to write 421 in other number systems?
 Bengali numerals ৪২১ Eastern Arabic numerals ٤٢١ Hieroglyphs numeralsused in Ancient Egypt 𓍥𓎇𓏺 Khmer numerals ៤២១ Japanese numerals 四百二十一 Roman numerals CDXXI Thai numerals ๔๒๑
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## Translation

How do you say 421 in 38 different languages?
 Arabic أربعة مائة و واحد و عشرون Croatian četiristo dvadeset i jedan Czech čtyři sta dvacet jeden Danish fire hundrede en og tyve Dutch vierhonderdéénentwintig Estonian alafa ene blaeve vɔ ɖekɛ Faroese fýre­hundrað­og­tjúgo­ein Filipino ápat na daán at dalawáng pû’t isá Finnish neljä­sataa­kaksi­kymmentä­yksi French quatre cent vingt et un Greek τετρακόσια είκοσι ένα German vier­hundert­ein­und­zwanzig Hebrew ארבע מאות עשרים ואחת Hindi चार सौ इक्कीस Hungarian négy­száz­huszon­egy Icelandic fjögur­hundrað og tuttugu og einn Indonesian empat ratus dua puluh satu Italian quattrocentoventuno Japanese 四百二十一 Korean 사백이십일 Latvian četrsimt divdesmit viens Lithuanian keturi šimtai dvidešimt vienas Norwegian fire hundre og tjue­én Persian چهارصد و بیست و یک Polish czterysta dwadzieścia jeden Portuguese quatrocentos e vinte e um Romanian patru sute douăzeci şi unu Russian четыреста двадцать один Serbian четиристо двадесет и један Slovak štyri­sto dvadsať­jeden Slovene štiristo dvaset ena Spanish cuatrocientos veintiuno Swahili mia nne na ishirini na moja Swedish fyrahundratjugoen Thai สี่​ร้อย​ยี่​สิบ​เอ็ด Turkish dört yüz yirmi bir Ukrainian чотириста двадцять один Vietnamese bốn trăm hai mươi mốt
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## Miscellaneous

 Number 421 reversed 124 Unicode Character U+01A5 ƥ Hexadecimal color (shorthand) #442211 Unix Timestamp Thu, 01 Jan 1970 00:07:01 +0000
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