The number 42582
42582 is a composite number with 16 divisors. Its prime factorisation is 2 × 3 × 47 × 151. Divisors (16): 1, 2, 3, 6, 47, 94, 141, 151, 282, 302, 453, 906, 7097, 14194, 21291, 42582.
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How to work it out
- 1
42582 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
42582 is composite. Its prime factorisation is
- 3
The divisors add up to 87552; without 42582 itself that is 44970, so 42582 is abundant (44970 is more than 42582). Euler's totient φ(42582) = 13800 numbers up to 42582 share no factor with it.
- 4
The digits of 42582 add up to 21, and repeating that until one digit is left gives the digital root 3. The Collatz sequence (halve if even, else 3n+1) takes 194 steps to reach 1.
LaTeX source of the formulas on this page
\[ 42582 = 2 \times 3 \times 47 \times 151 \]
42582 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 16 |
| Sum of divisors | 87552 |
| Euler totient φ(n) | 13800 |
| Square | 1813226724 |
| Cube | 77210820361368 |
| Square root | 206.354065 |
| Digit sum / digital root | 21 / 3 |
| Collatz steps to 1 | 194 |
| Scientific notation | 4.2582 × |
42582 in other forms
| Form | Value |
|---|---|
| In words | forty-two thousand five hundred and eighty-two |
| Binary (base 2) | 1010011001010110 |
| Octal (base 8) | 123126 |
| Hexadecimal (base 16) | A656 |
| Base 3 | 2011102010 |
| As time | 42582 seconds = 11 h 49 min 42 s |
Is 42582 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (42582 ÷ 2 = 21291) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | Yes (42582 ÷ 3 = 14194) | 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 2) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | Yes (42582 ÷ 6 = 7097) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 1) | 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 3) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 2) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 1) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 6) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 42582 a prime number?
No. 42582 = 2 × 3 × 47 × 151, so it is divisible by 2.
What are the factors of 42582?
1, 2, 3, 6, 47, 94, 141, 151, 282, 302, 453, 906, 7097, 14194, 21291, 42582.
What is 42582 in binary?
1010011001010110 (hexadecimal A656, octal 123126).
What is the square root of 42582?
About 206.3541.
Is 42582 divisible by 3?
Yes. Its digits add up to 21, a multiple of 3.
What is special about the number 42582?
It is a composite number with 16 divisors.