The number 9142
9142 is a composite number with 8 divisors. Its prime factorisation is 2 × 7 × 653. Divisors (8): 1, 2, 7, 14, 653, 1306, 4571, 9142.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
9142 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
9142 is composite. Its prime factorisation is
- 3
The divisors add up to 15696; without 9142 itself that is 6554, so 9142 is deficient (6554 is less than 9142). Euler's totient φ(9142) = 3912 numbers up to 9142 share no factor with it.
- 4
The digits of 9142 add up to 16, and repeating that until one digit is left gives the digital root 7. The Collatz sequence (halve if even, else 3n+1) takes 60 steps to reach 1.
LaTeX source of the formulas on this page
\[ 9142 = 2 \times 7 \times 653 \]
9142 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 15696 |
| Euler totient φ(n) | 3912 |
| Square | 83576164 |
| Cube | 764053291288 |
| Square root | 95.613807 |
| Digit sum / digital root | 16 / 7 |
| Collatz steps to 1 | 60 |
| Scientific notation | 9.142 × |
9142 in other forms
| Form | Value |
|---|---|
| In words | nine thousand one hundred and forty-two |
| Binary (base 2) | 10001110110110 |
| Octal (base 8) | 21666 |
| Hexadecimal (base 16) | 23B6 |
| Base 3 | 110112121 |
| As time | 9142 seconds = 2 h 32 min 22 s |
Is 9142 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (9142 ÷ 2 = 4571) | 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 2) | 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 | Yes (9142 ÷ 7 = 1306) | 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 7) | 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 10) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 9142 a prime number?
No. 9142 = 2 × 7 × 653, so it is divisible by 2.
What are the factors of 9142?
1, 2, 7, 14, 653, 1306, 4571, 9142.
What is 9142 in binary?
10001110110110 (hexadecimal 23B6, octal 21666).
What is the square root of 9142?
About 95.6138.
Is 9142 divisible by 3?
No. Its digits add up to 16, which is not a multiple of 3.
What is special about the number 9142?
It is a composite number with 8 divisors.