The number 42241
42241 is a composite number with 4 divisors. Its prime factorisation is 53 × 797. Divisors (4): 1, 53, 797, 42241.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 42241: a semiprime: 53 × 797, the product of two primes.
- 2
42241 is composite. Its prime factorisation is
- 3
The divisors add up to 43092; without 42241 itself that is 851, so 42241 is deficient (851 is less than 42241). Euler's totient φ(42241) = 41392 numbers up to 42241 share no factor with it.
- 4
The digits of 42241 add up to 13, and repeating that until one digit is left gives the digital root 4. The Collatz sequence (halve if even, else 3n+1) takes 106 steps to reach 1.
LaTeX source of the formulas on this page
\[ 42241 = 53 \times 797 \]
42241 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 43092 |
| Euler totient φ(n) | 41392 |
| Square | 1784302081 |
| Cube | 75370704203521 |
| Square root | 205.526154 |
| Digit sum / digital root | 13 / 4 |
| Collatz steps to 1 | 106 |
| Scientific notation | 4.2241 × |
42241 in other forms
| Form | Value |
|---|---|
| In words | forty-two thousand two hundred and forty-one |
| Binary (base 2) | 1010010100000001 |
| Octal (base 8) | 122401 |
| Hexadecimal (base 16) | A501 |
| Base 3 | 2010221111 |
| As time | 42241 seconds = 11 h 44 min 1 s |
Is 42241 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 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 3) | 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 4) | 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 1) | 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 42241 a prime number?
No. 42241 = 53 × 797, so it is divisible by 53.
What are the factors of 42241?
1, 53, 797, 42241.
What is 42241 in binary?
1010010100000001 (hexadecimal A501, octal 122401).
What is the square root of 42241?
About 205.5262.
Is 42241 divisible by 3?
No. Its digits add up to 13, which is not a multiple of 3.
What is special about the number 42241?
42241 is a semiprime: 53 × 797, the product of two primes.