The number 42899
42899 is a twin prime (42899 and 42901 are both prime) and the 4484th prime number. Its only divisors are 1 and 42899.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 42899: a twin prime (42899 and 42901 are both prime); the 4484th prime number.
- 2
42899 is prime, so its only factors are 1 and 42899. It is the 4484th prime; the next prime is 42901 and the one before is 42863.
- 3
The divisors add up to 42900; without 42899 itself that is 1, so 42899 is deficient (1 is less than 42899). Euler's totient φ(42899) = 42898 numbers up to 42899 share no factor with it.
- 4
The digits of 42899 add up to 32, and repeating that until one digit is left gives the digital root 5. The Collatz sequence (halve if even, else 3n+1) takes 57 steps to reach 1.
42899 at a glance
| Property | Value |
|---|---|
| Type | prime |
| Number of divisors | 2 |
| Sum of divisors | 42900 |
| Euler totient φ(n) | 42898 |
| Square | 1840324201 |
| Cube | 78948067898699 |
| Square root | 207.120738 |
| Digit sum / digital root | 32 / 5 |
| Collatz steps to 1 | 57 |
| Scientific notation | 4.2899 × |
42899 in other forms
| Form | Value |
|---|---|
| In words | forty-two thousand eight hundred and ninety-nine |
| Binary (base 2) | 1010011110010011 |
| Octal (base 8) | 123623 |
| Hexadecimal (base 16) | A793 |
| Base 3 | 2011211212 |
| As time | 42899 seconds = 11 h 54 min 59 s |
Is 42899 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | No (remainder 1) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | No (remainder 2) | A number is divisible by 3 if the digits add up to a multiple of 3. |
| 4 | No (remainder 3) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | No (remainder 4) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 5) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 3) | A number is divisible by 7 if double the last digit and subtract it from the rest: the result is a multiple of 7. |
| 8 | No (remainder 3) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 5) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 9) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 10) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 11) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 42899 a prime number?
Yes. 42899 is divisible only by 1 and itself.
What are the factors of 42899?
1, 42899.
What is 42899 in binary?
1010011110010011 (hexadecimal A793, octal 123623).
What is the square root of 42899?
About 207.1207.
Is 42899 divisible by 3?
No. Its digits add up to 32, which is not a multiple of 3.
What is special about the number 42899?
42899 is a twin prime (42899 and 42901 are both prime); the 4484th prime number.