The number 42377
42377 is a composite number with 4 divisors. Its prime factorisation is 31 × 1367. Divisors (4): 1, 31, 1367, 42377.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 42377: a semiprime: 31 × 1367, the product of two primes.
- 2
42377 is composite. Its prime factorisation is
- 3
The divisors add up to 43776; without 42377 itself that is 1399, so 42377 is deficient (1399 is less than 42377). Euler's totient φ(42377) = 40980 numbers up to 42377 share no factor with it.
- 4
The digits of 42377 add up to 23, and repeating that until one digit is left gives the digital root 5. The Collatz sequence (halve if even, else 3n+1) takes 132 steps to reach 1.
LaTeX source of the formulas on this page
\[ 42377 = 31 \times 1367 \]
42377 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 43776 |
| Euler totient φ(n) | 40980 |
| Square | 1795810129 |
| Cube | 76101045836633 |
| Square root | 205.856746 |
| Digit sum / digital root | 23 / 5 |
| Collatz steps to 1 | 132 |
| Scientific notation | 4.2377 × |
42377 in other forms
| Form | Value |
|---|---|
| In words | forty-two thousand three hundred and seventy-seven |
| Binary (base 2) | 1010010110001001 |
| Octal (base 8) | 122611 |
| Hexadecimal (base 16) | A589 |
| Base 3 | 2011010112 |
| As time | 42377 seconds = 11 h 46 min 17 s |
Is 42377 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 2) | 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 5) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 6) | 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 5) | 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 5) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 5) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 42377 a prime number?
No. 42377 = 31 × 1367, so it is divisible by 31.
What are the factors of 42377?
1, 31, 1367, 42377.
What is 42377 in binary?
1010010110001001 (hexadecimal A589, octal 122611).
What is the square root of 42377?
About 205.8567.
Is 42377 divisible by 3?
No. Its digits add up to 23, which is not a multiple of 3.
What is special about the number 42377?
42377 is a semiprime: 31 × 1367, the product of two primes.