The number 42059
42059 is a composite number with 4 divisors. Its prime factorisation is 137 × 307. Divisors (4): 1, 137, 307, 42059.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 42059: a semiprime: 137 × 307, the product of two primes.
- 2
42059 is composite. Its prime factorisation is
- 3
The divisors add up to 42504; without 42059 itself that is 445, so 42059 is deficient (445 is less than 42059). Euler's totient φ(42059) = 41616 numbers up to 42059 share no factor with it.
- 4
The digits of 42059 add up to 20, and repeating that until one digit is left gives the digital root 2. The Collatz sequence (halve if even, else 3n+1) takes 31 steps to reach 1.
LaTeX source of the formulas on this page
\[ 42059 = 137 \times 307 \]
42059 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 42504 |
| Euler totient φ(n) | 41616 |
| Square | 1768959481 |
| Cube | 74400666811379 |
| Square root | 205.082910 |
| Digit sum / digital root | 20 / 2 |
| Collatz steps to 1 | 31 |
| Scientific notation | 4.2059 × |
42059 in other forms
| Form | Value |
|---|---|
| In words | forty-two thousand and fifty-nine |
| Binary (base 2) | 1010010001001011 |
| Octal (base 8) | 122113 |
| Hexadecimal (base 16) | A44B |
| Base 3 | 2010200202 |
| As time | 42059 seconds = 11 h 40 min 59 s |
Is 42059 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 4) | 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 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 3) | 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 9) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 6) | 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 42059 a prime number?
No. 42059 = 137 × 307, so it is divisible by 137.
What are the factors of 42059?
1, 137, 307, 42059.
What is 42059 in binary?
1010010001001011 (hexadecimal A44B, octal 122113).
What is the square root of 42059?
About 205.0829.
Is 42059 divisible by 3?
No. Its digits add up to 20, which is not a multiple of 3.
What is special about the number 42059?
42059 is a semiprime: 137 × 307, the product of two primes.