The number 42827
42827 is a composite number with 4 divisors. Its prime factorisation is 113 × 379. Divisors (4): 1, 113, 379, 42827.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 42827: a semiprime: 113 × 379, the product of two primes.
- 2
42827 is composite. Its prime factorisation is
- 3
The divisors add up to 43320; without 42827 itself that is 493, so 42827 is deficient (493 is less than 42827). Euler's totient φ(42827) = 42336 numbers up to 42827 share no factor with it.
- 4
The digits of 42827 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 49 steps to reach 1.
LaTeX source of the formulas on this page
\[ 42827 = 113 \times 379 \]
42827 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 43320 |
| Euler totient φ(n) | 42336 |
| Square | 1834151929 |
| Cube | 78551224663283 |
| Square root | 206.946853 |
| Digit sum / digital root | 23 / 5 |
| Collatz steps to 1 | 49 |
| Scientific notation | 4.2827 × |
42827 in other forms
| Form | Value |
|---|---|
| In words | forty-two thousand eight hundred and twenty-seven |
| Binary (base 2) | 1010011101001011 |
| Octal (base 8) | 123513 |
| Hexadecimal (base 16) | A74B |
| Base 3 | 2011202012 |
| As time | 42827 seconds = 11 h 53 min 47 s |
Is 42827 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 3) | 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 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 3) | 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 4) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 11) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 42827 a prime number?
No. 42827 = 113 × 379, so it is divisible by 113.
What are the factors of 42827?
1, 113, 379, 42827.
What is 42827 in binary?
1010011101001011 (hexadecimal A74B, octal 123513).
What is the square root of 42827?
About 206.9469.
Is 42827 divisible by 3?
No. Its digits add up to 23, which is not a multiple of 3.
What is special about the number 42827?
42827 is a semiprime: 113 × 379, the product of two primes.