The number 42271
42271 is a composite number with 4 divisors. Its prime factorisation is 41 × 1031. Divisors (4): 1, 41, 1031, 42271.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 42271: a semiprime: 41 × 1031, the product of two primes.
- 2
42271 is composite. Its prime factorisation is
- 3
The divisors add up to 43344; without 42271 itself that is 1073, so 42271 is deficient (1073 is less than 42271). Euler's totient φ(42271) = 41200 numbers up to 42271 share no factor with it.
- 4
The digits of 42271 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 62 steps to reach 1.
LaTeX source of the formulas on this page
\[ 42271 = 41 \times 1031 \]
42271 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 43344 |
| Euler totient φ(n) | 41200 |
| Square | 1786837441 |
| Cube | 75531405468511 |
| Square root | 205.599125 |
| Digit sum / digital root | 16 / 7 |
| Collatz steps to 1 | 62 |
| Scientific notation | 4.2271 × |
42271 in other forms
| Form | Value |
|---|---|
| In words | forty-two thousand two hundred and seventy-one |
| Binary (base 2) | 1010010100011111 |
| Octal (base 8) | 122437 |
| Hexadecimal (base 16) | A51F |
| Base 3 | 2010222121 |
| As time | 42271 seconds = 11 h 44 min 31 s |
Is 42271 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 3) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | No (remainder 1) | 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 5) | 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 7) | 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 1) | 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 7) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 42271 a prime number?
No. 42271 = 41 × 1031, so it is divisible by 41.
What are the factors of 42271?
1, 41, 1031, 42271.
What is 42271 in binary?
1010010100011111 (hexadecimal A51F, octal 122437).
What is the square root of 42271?
About 205.5991.
Is 42271 divisible by 3?
No. Its digits add up to 16, which is not a multiple of 3.
What is special about the number 42271?
42271 is a semiprime: 41 × 1031, the product of two primes.