The number 42041
42041 is a composite number with 4 divisors. Its prime factorisation is 17 × 2473. Divisors (4): 1, 17, 2473, 42041.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 42041: a semiprime: 17 × 2473, the product of two primes.
- 2
42041 is composite. Its prime factorisation is
- 3
The divisors add up to 44532; without 42041 itself that is 2491, so 42041 is deficient (2491 is less than 42041). Euler's totient φ(42041) = 39552 numbers up to 42041 share no factor with it.
- 4
The digits of 42041 add up to 11, and repeating that until one digit is left gives the digital root 2. The Collatz sequence (halve if even, else 3n+1) takes 57 steps to reach 1.
LaTeX source of the formulas on this page
\[ 42041 = 17 \times 2473 \]
42041 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 44532 |
| Euler totient φ(n) | 39552 |
| Square | 1767445681 |
| Cube | 74305183874921 |
| Square root | 205.039021 |
| Digit sum / digital root | 11 / 2 |
| Collatz steps to 1 | 57 |
| Scientific notation | 4.2041 × |
42041 in other forms
| Form | Value |
|---|---|
| In words | forty-two thousand and forty-one |
| Binary (base 2) | 1010010000111001 |
| Octal (base 8) | 122071 |
| Hexadecimal (base 16) | A439 |
| Base 3 | 2010200002 |
| As time | 42041 seconds = 11 h 40 min 41 s |
Is 42041 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 1) | 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 2) | 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 10) | 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 42041 a prime number?
No. 42041 = 17 × 2473, so it is divisible by 17.
What are the factors of 42041?
1, 17, 2473, 42041.
What is 42041 in binary?
1010010000111001 (hexadecimal A439, octal 122071).
What is the square root of 42041?
About 205.0390.
Is 42041 divisible by 3?
No. Its digits add up to 11, which is not a multiple of 3.
What is special about the number 42041?
42041 is a semiprime: 17 × 2473, the product of two primes.