40
Number 40 (forty) is an even two-digits composite number and natural number following 39 and preceding 41.
Nominal | 40 |
Cardinal | forty |
Ordinal | 40th |
Number of digits | 2 |
Sum of digits | 4 |
Product of digits | 0 |
Number parity | Even |
Calculation was done in 0.0000309944 seconds
Prime factorization | 2 x 2 x 2 x 5 |
Prime factorization in exponent form | 23 x 5 |
Prime factors | 2, 5 |
Number of distinct prime factors ω(n) | 2 |
Total number of prime factors Ω(n) | 4 |
Sum of prime factors | 7 |
Product of prime factors | 10 |
Calculation was done in 0.0000069141 seconds
List of proper divisors | 1, 2, 4, 5, 8, 10, 20 |
List of all dividers | 1, 2, 4, 5, 8, 10, 20, 40 |
Number of divisors d(n) | 8 |
Sum of all divisors σ(n) | 90 |
Aliquot sum | 50 |
40 is an abundant number , because the sum of its proper divisors (50) is greater than itself. Its abundance is 10. |
Calculation was done in 0.0000231266 seconds
Is 40 a prime number? | No |
Is 40 a semiprime number? | No |
Is 40 a Chen prime number? | No |
Is 40 a Mersenne prime number? | No |
Calculation was done in 0.0000100136 seconds
Is 40 a Catalan number? | No |
Is 40 a Fibonacci number? | No |
Is 40 a Idoneal number? | Yes: I23 |
Calculation was done in 0.0000038147 seconds
40 is not a Happy number |
40 is a Humble number |
40 is not a Münchhausen number |
40 is not a Perfect number |
40 is not a Perfect square |
40 is not a Palindrome |
Calculation was done in 0.0043301582 seconds
Base | System | Value |
---|
2 | Binary | 1010002 |
3 | Ternary | 11113 |
4 | Quaternary | 2204 |
5 | Quinary | 1305 |
6 | Senary | 1046 |
7 | Septenary | 557 |
8 | Octal | 508 |
9 | Nonary | 449 |
10 | Decimal | 40 |
12 | Duodecimal | 3412 |
16 | Hexadecimal | 2816 |
20 | Vigesimal | 2020 |
36 | Base36 | 1436 |
60 | Sexagesimal | e60 |
Calculation was done in 0.0000159740 seconds
Square of 40 (n2) | 1600 |
Cube of 40 (n3) | 64000 |
Square root of 40 | 6.3245553203368 |
Natural Logarithm (ln) of 40 | 3.6888794541139 |
Decimal Logarithm (log) of 40 | 1.602059991328 |
Calculation was done in 0.0000040531 seconds
Sine of 40 | 0.74511316047935 |
Cosecant of 40 | 1.3420780265868 |
Cosine of 40 | -0.66693806165226 |
Secant of 40 | -1.4993896097677 |
Tangent of 40 | -1.1172149309239 |
Cotangent of 40 | -0.89508291763791 |
Calculation was done in 0.0000109673 seconds
Is 40 an Even Number?
Yes, the number 40 is an even number.
Previous even number is
38
Calculation was done in 0.0000040531 seconds
The spelling of 40 in words is "forty", meaning that: |
40 is an aban number (a number without the letter a) |
40 is an eban number (a number without the letter e) |
40 is an iban number (a number without the letter i) |
40 is not an oban number (as it contains the letter o) |
40 is not a tban number (as it contains the letter t) |
40 is an uban number (a number without the letter u) |
Calculation was done in 0.0000030994 seconds
Bengali numerals | ৪০ |
Eastern Arabic numerals | ٤٠ |
Hieroglyphs numeralsused in Ancient Egypt | 𓎉 |
Khmer numerals | ៤០ |
Japanese numerals | 四十 |
Roman numerals | XL |
Thai numerals | ๔๐ |
Calculation was done in 0.0000557899 seconds
Arabic | أربعون |
Croatian | četrdeset |
Czech | čtyřicet |
Danish | fyrre |
Dutch | veertig |
Estonian | blaene |
Faroese | fýrati |
Filipino | ápat na pû |
Finnish | neljäkymmentä |
French | quarante |
Greek | σαράντα |
German | vierzig |
Hebrew | ארבעים |
Hindi | चालीस |
Hungarian | negyven |
Icelandic | fjörutíu |
Indonesian | empat puluh |
Italian | quaranta |
Japanese | 四十 |
Korean | 사십 |
Latvian | četrdesmit |
Lithuanian | keturiasdešimt |
Norwegian | førti |
Persian | چهل |
Polish | czterdzieści |
Portuguese | quarenta |
Romanian | patruzeci |
Russian | сорок |
Serbian | четрдесет |
Slovak | štyridsať |
Slovene | štirideset |
Spanish | cuarenta |
Swahili | arobaini |
Swedish | fyrtio |
Thai | สี่สิบ |
Turkish | kırk |
Ukrainian | сорок |
Vietnamese | bốn mươi |
Calculation was done in 0.0140140057 seconds
Number 40 reversed | 04 |
ASCII Code | 40 | ( |
Unicode Character | U+0028 | ( |
Unix Timestamp | Thu, 01 Jan 1970 00:00:40 +0000 |
Calculation was done in 0.0000228882 seconds
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