The number 42418
42418 is a composite number with 8 divisors. Its prime factorisation is 2 × 127 × 167. Divisors (8): 1, 2, 127, 167, 254, 334, 21209, 42418.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
42418 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
42418 is composite. Its prime factorisation is
- 3
The divisors add up to 64512; without 42418 itself that is 22094, so 42418 is deficient (22094 is less than 42418). Euler's totient φ(42418) = 20916 numbers up to 42418 share no factor with it.
- 4
The digits of 42418 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 101 steps to reach 1.
LaTeX source of the formulas on this page
\[ 42418 = 2 \times 127 \times 167 \]
42418 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 64512 |
| Euler totient φ(n) | 20916 |
| Square | 1799286724 |
| Cube | 76322144258632 |
| Square root | 205.956306 |
| Digit sum / digital root | 19 / 1 |
| Collatz steps to 1 | 101 |
| Scientific notation | 4.2418 × |
42418 in other forms
| Form | Value |
|---|---|
| In words | forty-two thousand four hundred and eighteen |
| Binary (base 2) | 1010010110110010 |
| Octal (base 8) | 122662 |
| Hexadecimal (base 16) | A5B2 |
| Base 3 | 2011012001 |
| As time | 42418 seconds = 11 h 46 min 58 s |
Is 42418 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (42418 ÷ 2 = 21209) | 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 3) | 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 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 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 8) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 2) | 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 42418 a prime number?
No. 42418 = 2 × 127 × 167, so it is divisible by 2.
What are the factors of 42418?
1, 2, 127, 167, 254, 334, 21209, 42418.
What is 42418 in binary?
1010010110110010 (hexadecimal A5B2, octal 122662).
What is the square root of 42418?
About 205.9563.
Is 42418 divisible by 3?
No. Its digits add up to 19, which is not a multiple of 3.
What is special about the number 42418?
It is a composite number with 8 divisors.