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Number 145 (one hundred forty-five) is an odd three-digits composite number and natural number following 144 and preceding 146.

Properties of the number 145

Cardinalone hundred forty-five
one hundred forty-five
Number of digits3
Sum of digits10
Product of digits20
Number parityOdd
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Prime Factorization of 145

Prime factorization5 x 29
Prime factors5, 29
Number of distinct prime factors ω(n)2
Total number of prime factors Ω(n)2
Sum of prime factors34
Product of prime factors145
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Divisors of 145

List of proper divisors 1, 5, 29
List of all dividers1, 5, 29, 145
Number of divisors d(n)4
Sum of all divisors σ(n)180
Aliquot sum 35
145 is a deficient number , since it is larger than the sum of its proper divisors (35). Its deficiency is 110.
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Prime numbers

Is 145 a prime number?No
Is 145 a semiprime number?Yes
Is 145 a Chen prime number?No
Is 145 a Mersenne prime number?No
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Is 145 a Catalan number?No
Is 145 a Fibonacci number?No
Is 145 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.
145 is not a Happy number
145 is not a Humble number
145 is not a Münchhausen number
145 is not a Perfect number
145 is not a Perfect square
145 is not a Palindrome
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Numeric Bases of 145

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.
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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 145 (n2)21025
Cube of 145 (n3)3048625
Square root of 14512.041594578792
Natural Logarithm (ln) of 1454.9767337424206
Decimal Logarithm (log) of 1452.161368002235
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Trigonometry is the study of the relationship between the angles and sides of a triangle.
Sine of 1450.46774516204513
Cosecant of 1452.1379162867825
Cosine of 1450.8838633737085
Secant of 1451.1313965820353
Tangent of 1450.52920527760142
Cotangent of 1451.8896259019419
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Number parity

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

Is 145 an Even Number?


Is 145 an Odd Number?

Yes, the number 145 is an odd number.
Total number of all odd numbers from 1 to 145 is 73
Sum of all the odd numbers from 1 to 145 are 5329
The sum of all odd numbers is a perfect square: 5329 = 73
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 145 in words is "one hundred forty-five", meaning that:
145 is an aban number (a number without the letter a)
145 is not an eban number (as it contains the letter e)
145 is not an iban number (as it contains the letter i)
145 is not an oban number (as it contains the letter o)
145 is not a tban number (as it contains the letter t)
145 is not an uban number (as it contains the letter u)
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Numeral systems

How to write 145 in other number systems?
Bengali numerals১৪৫
Eastern Arabic numerals١٤٥
Hieroglyphs numeralsused in Ancient Egypt𓍢𓎉𓏾
Khmer numerals១៤៥
Japanese numerals百四十五
Roman numeralsCXLV
Thai numerals๑๔๕
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How do you say 145 in 38 different languages?
Arabicمائة و خمسة و أربعون
Croatiansto četrdeset i pet
Czechsto čtyřicet pět
Danish et hundrede fem og fyrre
Estonianalafa ɖeka blaene vɔ atɔ̃
Filipinoisáng daán at ápat na pû’t limá
Frenchcent quarante-cinq
Greekεκατόν σαράντα πέντε
Hebrewמאה ארבעים וחמש
Hindiएक सौ पैंतालीस
Icelandiceitt­hundrað og fjörutíu og fimm
Indonesianseratus empat puluh lima
Latviansimt četrdesmit pieci
Lithuanianšimtas keturiasdešimt penki
Norwegianhundre og førti­fem
Persianصد و چهل و پنج
Polishsto czterdzieści pięć
Portuguesecento e quarenta e cinco
Romanianuna sută patruzeci şi cinci
Russianсто сорок пять
Serbianсто четрдесет и пет
Slovakjedna­sto štyridsať­päť
Slovenesto štirideset pet
Spanish ciento cuarenta y cinco
Swahilimia moja na arobaini na tano
Turkishyüz kırk beş
Ukrainianсто сорок пʼять
Vietnamesemột trăm bốn mươi lăm
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Number 145 reversed541
ASCII Code145
Unicode CharacterU+0091
Hexadecimal color (shorthand)#114455
Unix TimestampThu, 01 Jan 1970 00:02:25 +0000
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