The number 80137
80137 is a composite number with 4 divisors. Its prime factorisation is 127 × 631. Divisors (4): 1, 127, 631, 80137.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 80137: a semiprime: 127 × 631, the product of two primes.
- 2
80137 is composite. Its prime factorisation is
- 3
The divisors add up to 80896; without 80137 itself that is 759, so 80137 is deficient (759 is less than 80137). Euler's totient φ(80137) = 79380 numbers up to 80137 share no factor with it.
- 4
The digits of 80137 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 213 steps to reach 1.
LaTeX source of the formulas on this page
\[ 80137 = 127 \times 631 \]
80137 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 80896 |
| Euler totient φ(n) | 79380 |
| Square | 6421938769 |
| Cube | 514634907131353 |
| Square root | 283.084793 |
| Digit sum / digital root | 19 / 1 |
| Collatz steps to 1 | 213 |
| Scientific notation | 8.0137 × |
80137 in other forms
| Form | Value |
|---|---|
| In words | eighty thousand one hundred and thirty-seven |
| Binary (base 2) | 10011100100001001 |
| Octal (base 8) | 234411 |
| Hexadecimal (base 16) | 13909 |
| Base 3 | 11001221001 |
| As time | 80137 seconds = 22 h 15 min 37 s |
Is 80137 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | No (remainder 1) | 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 1) | 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 1) | 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 1) | 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 7) | 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 1) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 80137 a prime number?
No. 80137 = 127 × 631, so it is divisible by 127.
What are the factors of 80137?
1, 127, 631, 80137.
What is 80137 in binary?
10011100100001001 (hexadecimal 13909, octal 234411).
What is the square root of 80137?
About 283.0848.
Is 80137 divisible by 3?
No. Its digits add up to 19, which is not a multiple of 3.
What is special about the number 80137?
80137 is a semiprime: 127 × 631, the product of two primes.