The number 42910
42910 is a composite number with 16 divisors. Its prime factorisation is 2 × 5 × 7 × 613. Divisors (16): 1, 2, 5, 7, 10, 14, 35, 70, 613, 1226, 3065, 4291, 6130, 8582, 21455, 42910.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
42910 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
42910 is composite. Its prime factorisation is
- 3
The divisors add up to 88416; without 42910 itself that is 45506, so 42910 is abundant (45506 is more than 42910). Euler's totient φ(42910) = 14688 numbers up to 42910 share no factor with it.
- 4
The digits of 42910 add up to 16, and repeating that until one digit is left gives the digital root 7. The Collatz sequence (halve if even, else 3n+1) takes 101 steps to reach 1.
LaTeX source of the formulas on this page
\[ 42910 = 2 \times 5 \times 7 \times 613 \]
42910 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 16 |
| Sum of divisors | 88416 |
| Euler totient φ(n) | 14688 |
| Square | 1841268100 |
| Cube | 79008814171000 |
| Square root | 207.147291 |
| Digit sum / digital root | 16 / 7 |
| Collatz steps to 1 | 101 |
| Scientific notation | 4.291 × |
42910 in other forms
| Form | Value |
|---|---|
| In words | forty-two thousand nine hundred and ten |
| Binary (base 2) | 1010011110011110 |
| Octal (base 8) | 123636 |
| Hexadecimal (base 16) | A79E |
| Base 3 | 2011212021 |
| As time | 42910 seconds = 11 h 55 min 10 s |
Is 42910 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (42910 ÷ 2 = 21455) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | No (remainder 1) | A number is divisible by 3 if the digits add up to a multiple of 3. |
| 4 | No (remainder 2) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | Yes (42910 ÷ 5 = 8582) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 4) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | Yes (42910 ÷ 7 = 6130) | 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 6) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 7) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | Yes (42910 ÷ 10 = 4291) | 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 10) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 42910 a prime number?
No. 42910 = 2 × 5 × 7 × 613, so it is divisible by 2.
What are the factors of 42910?
1, 2, 5, 7, 10, 14, 35, 70, 613, 1226, 3065, 4291, 6130, 8582, 21455, 42910.
What is 42910 in binary?
1010011110011110 (hexadecimal A79E, octal 123636).
What is the square root of 42910?
About 207.1473.
Is 42910 divisible by 3?
No. Its digits add up to 16, which is not a multiple of 3.
What is special about the number 42910?
It is a composite number with 16 divisors.