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42

Number 42 (forty-two) is an even two-digits composite number and natural number following 41 and preceding 43.

Properties of the number 42

Nominal42
Cardinalforty-two
Ordinal42nd
Number of digits2
Sum of digits6
Product of digits8
Number parityEven
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Prime Factorization of 42

Prime factorization2 x 3 x 7
Prime factors2, 3, 7
Number of distinct prime factors ω(n)3
Total number of prime factors Ω(n)3
Sum of prime factors12
Product of prime factors42
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Divisors of 42

List of proper divisors 1, 2, 3, 6, 7, 14, 21
List of all dividers1, 2, 3, 6, 7, 14, 21, 42
Number of divisors d(n)8
Sum of all divisors σ(n)96
Aliquot sum 54
42 is an abundant number , because the sum of its proper divisors (54) is greater than itself. Its abundance is 12.
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Prime numbers

Is 42 a prime number?No
Is 42 a semiprime number?No
Is 42 a Chen prime number?No
Is 42 a Mersenne prime number?No
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Sequences

Is 42 a Catalan number?Yes: C5
Is 42 a Fibonacci number?No
Is 42 a Idoneal number?Yes: I24
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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.
42 is not a Happy number
42 is a Humble number
42 is not a Münchhausen number
42 is not a Perfect number
42 is not a Perfect square
42 is not a Palindrome
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Numeric Bases of 42

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
2Binary1010102
3Ternary11203
4Quaternary2224
5Quinary1325
6Senary1106
7Septenary607
8Octal528
9Nonary469
10Decimal42
12Duodecimal3612
16Hexadecimal2a16
20Vigesimal2220
36Base361636
60Sexagesimalg60
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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 42 (n2)1764
Cube of 42 (n3)74088
Square root of 426.4807406984079
Natural Logarithm (ln) of 423.7376696182834
Decimal Logarithm (log) of 421.6232492903979
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Trigonometry

Trigonometry is the study of the relationship between the angles and sides of a triangle.
Sine of 42-0.91652154791563
Cosecant of 42-1.0910818215613
Cosine of 42-0.39998531498835
Secant of 42-2.5000917846925
Tangent of 422.2913879924375
Cotangent of 420.43641670607527
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Number parity

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

Is 42 an Even Number?

Yes, the number 42 is an even number.

Is 42 an Odd Number?

No
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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 42 in words is "forty-two", meaning that:
42 is an aban number (a number without the letter a)
42 is an eban number (a number without the letter e)
42 is an iban number (a number without the letter i)
42 is not an oban number (as it contains the letter o)
42 is not a tban number (as it contains the letter t)
42 is an uban number (a number without the letter u)
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Numeral systems

How to write 42 in other number systems?
Bengali numerals৪২
Eastern Arabic numerals٤٢
Hieroglyphs numeralsused in Ancient Egypt𓎉𓏻
Khmer numerals៤២
Japanese numerals四十二
Roman numeralsXLII
Thai numerals๔๒
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Translation

How do you say 42 in 38 different languages?
Arabicإثنان و أربعون
Croatiančetrdeset i dva
Czechčtyřicet dva
Danish to og fyrre
Dutchtweeenveertig
Estonianblaene vɔ eve
Faroesefýrati­tveir
Filipinoápat na pû’t dalawá
Finnishneljä­kymmentä­kaksi
Frenchquarante-deux
Greekσαράντα δύο
Germanzwei­und­vierzig
Hebrewארבעים ושתיים
Hindiबयालीस
Hungariannegyven­kettő
Icelandicfjörutíu og tveir
Indonesianempat puluh dua
Italianquarantadue
Japanese四十二
Korean사십이
Latviančetrdesmit divi
Lithuanianketuriasdešimt du
Norwegianførti­to
Persianچهل و دو
Polishczterdzieści dwa
Portuguesequarenta e dois
Romanianpatruzeci şi doi
Russianсорок два
Serbianчетрдесет и два
Slovakštyridsať­dva
Sloveneštirideset dva
Spanish cuarenta y dos
Swahiliarobaini na mbili
Swedishfyrtiotvå
Thaiสี่​สิบ​สอง
Turkishkırk iki
Ukrainianсорок два
Vietnamesebốn mươi hai
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Miscellaneous

Number 42 reversed24
ASCII Code42*
Unicode CharacterU+002A*
Unix TimestampThu, 01 Jan 1970 00:00:42 +0000
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