The number 42558
42558 is a composite number with 16 divisors. Its prime factorisation is 2 × 3 × 41 × 173. Divisors (16): 1, 2, 3, 6, 41, 82, 123, 173, 246, 346, 519, 1038, 7093, 14186, 21279, 42558.
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How to work it out
- 1
42558 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
42558 is composite. Its prime factorisation is
- 3
The divisors add up to 87696; without 42558 itself that is 45138, so 42558 is abundant (45138 is more than 42558). Euler's totient φ(42558) = 13760 numbers up to 42558 share no factor with it.
- 4
The digits of 42558 add up to 24, and repeating that until one digit is left gives the digital root 6. The Collatz sequence (halve if even, else 3n+1) takes 62 steps to reach 1.
LaTeX source of the formulas on this page
\[ 42558 = 2 \times 3 \times 41 \times 173 \]
42558 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 16 |
| Sum of divisors | 87696 |
| Euler totient φ(n) | 13760 |
| Square | 1811183364 |
| Cube | 77080341605112 |
| Square root | 206.295904 |
| Digit sum / digital root | 24 / 6 |
| Collatz steps to 1 | 62 |
| Scientific notation | 4.2558 × |
42558 in other forms
| Form | Value |
|---|---|
| In words | forty-two thousand five hundred and fifty-eight |
| Binary (base 2) | 1010011000111110 |
| Octal (base 8) | 123076 |
| Hexadecimal (base 16) | A63E |
| Base 3 | 2011101020 |
| As time | 42558 seconds = 11 h 49 min 18 s |
Is 42558 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (42558 ÷ 2 = 21279) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | Yes (42558 ÷ 3 = 14186) | 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 3) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | Yes (42558 ÷ 6 = 7093) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 5) | 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 6) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 8) | 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 6) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 42558 a prime number?
No. 42558 = 2 × 3 × 41 × 173, so it is divisible by 2.
What are the factors of 42558?
1, 2, 3, 6, 41, 82, 123, 173, 246, 346, 519, 1038, 7093, 14186, 21279, 42558.
What is 42558 in binary?
1010011000111110 (hexadecimal A63E, octal 123076).
What is the square root of 42558?
About 206.2959.
Is 42558 divisible by 3?
Yes. Its digits add up to 24, a multiple of 3.
What is special about the number 42558?
It is a composite number with 16 divisors.