The number 42962
42962 is a composite number with 4 divisors. Its prime factorisation is 2 × 21481. Divisors (4): 1, 2, 21481, 42962.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 42962: a semiprime: 2 × 21481, the product of two primes.
- 2
42962 is composite. Its prime factorisation is
- 3
The divisors add up to 64446; without 42962 itself that is 21484, so 42962 is deficient (21484 is less than 42962). Euler's totient φ(42962) = 21480 numbers up to 42962 share no factor with it.
- 4
The digits of 42962 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 150 steps to reach 1.
LaTeX source of the formulas on this page
\[ 42962 = 2 \times 21481 \]
42962 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 64446 |
| Euler totient φ(n) | 21480 |
| Square | 1845733444 |
| Cube | 79296400221128 |
| Square root | 207.272767 |
| Digit sum / digital root | 23 / 5 |
| Collatz steps to 1 | 150 |
| Scientific notation | 4.2962 × |
42962 in other forms
| Form | Value |
|---|---|
| In words | forty-two thousand nine hundred and sixty-two |
| Binary (base 2) | 1010011111010010 |
| Octal (base 8) | 123722 |
| Hexadecimal (base 16) | A7D2 |
| Base 3 | 2011221012 |
| As time | 42962 seconds = 11 h 56 min 2 s |
Is 42962 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (42962 ÷ 2 = 21481) | 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 2) | 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 2) | 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 2) | 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 2) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 7) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 2) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 42962 a prime number?
No. 42962 = 2 × 21481, so it is divisible by 2.
What are the factors of 42962?
1, 2, 21481, 42962.
What is 42962 in binary?
1010011111010010 (hexadecimal A7D2, octal 123722).
What is the square root of 42962?
About 207.2728.
Is 42962 divisible by 3?
No. Its digits add up to 23, which is not a multiple of 3.
What is special about the number 42962?
42962 is a semiprime: 2 × 21481, the product of two primes.