The number 42706
42706 is a composite number with 8 divisors. Its prime factorisation is 2 × 131 × 163. Divisors (8): 1, 2, 131, 163, 262, 326, 21353, 42706.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
42706 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
42706 is composite. Its prime factorisation is
- 3
The divisors add up to 64944; without 42706 itself that is 22238, so 42706 is deficient (22238 is less than 42706). Euler's totient φ(42706) = 21060 numbers up to 42706 share no factor with it.
- 4
The digits of 42706 add up to 19, and repeating that until one digit is left gives the digital root 1. The Collatz sequence (halve if even, else 3n+1) takes 49 steps to reach 1.
LaTeX source of the formulas on this page
\[ 42706 = 2 \times 131 \times 163 \]
42706 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 64944 |
| Euler totient φ(n) | 21060 |
| Square | 1823802436 |
| Cube | 77887306831816 |
| Square root | 206.654301 |
| Digit sum / digital root | 19 / 1 |
| Collatz steps to 1 | 49 |
| Scientific notation | 4.2706 × |
42706 in other forms
| Form | Value |
|---|---|
| In words | forty-two thousand seven hundred and six |
| Binary (base 2) | 1010011011010010 |
| Octal (base 8) | 123322 |
| Hexadecimal (base 16) | A6D2 |
| Base 3 | 2011120201 |
| As time | 42706 seconds = 11 h 51 min 46 s |
Is 42706 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (42706 ÷ 2 = 21353) | 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 | No (remainder 1) | 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 | No (remainder 6) | 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 2) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 1) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 6) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 4) | 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 42706 a prime number?
No. 42706 = 2 × 131 × 163, so it is divisible by 2.
What are the factors of 42706?
1, 2, 131, 163, 262, 326, 21353, 42706.
What is 42706 in binary?
1010011011010010 (hexadecimal A6D2, octal 123322).
What is the square root of 42706?
About 206.6543.
Is 42706 divisible by 3?
No. Its digits add up to 19, which is not a multiple of 3.
What is special about the number 42706?
It is a composite number with 8 divisors.