The number 42898
42898 is a composite number with 8 divisors. Its prime factorisation is 2 × 89 × 241. Divisors (8): 1, 2, 89, 178, 241, 482, 21449, 42898.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
42898 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
42898 is composite. Its prime factorisation is
- 3
The divisors add up to 65340; without 42898 itself that is 22442, so 42898 is deficient (22442 is less than 42898). Euler's totient φ(42898) = 21120 numbers up to 42898 share no factor with it.
- 4
The digits of 42898 add up to 31, and repeating that until one digit is left gives the digital root 4. The Collatz sequence (halve if even, else 3n+1) takes 57 steps to reach 1.
LaTeX source of the formulas on this page
\[ 42898 = 2 \times 89 \times 241 \]
42898 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 65340 |
| Euler totient φ(n) | 21120 |
| Square | 1840238404 |
| Cube | 78942547054792 |
| Square root | 207.118324 |
| Digit sum / digital root | 31 / 4 |
| Collatz steps to 1 | 57 |
| Scientific notation | 4.2898 × |
42898 in other forms
| Form | Value |
|---|---|
| In words | forty-two thousand eight hundred and ninety-eight |
| Binary (base 2) | 1010011110010010 |
| Octal (base 8) | 123622 |
| Hexadecimal (base 16) | A792 |
| Base 3 | 2011211211 |
| As time | 42898 seconds = 11 h 54 min 58 s |
Is 42898 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (42898 ÷ 2 = 21449) | 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 2) | 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 4) | 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 9) | 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 42898 a prime number?
No. 42898 = 2 × 89 × 241, so it is divisible by 2.
What are the factors of 42898?
1, 2, 89, 178, 241, 482, 21449, 42898.
What is 42898 in binary?
1010011110010010 (hexadecimal A792, octal 123622).
What is the square root of 42898?
About 207.1183.
Is 42898 divisible by 3?
No. Its digits add up to 31, which is not a multiple of 3.
What is special about the number 42898?
It is a composite number with 8 divisors.