The number 42673
42673 is a composite number with 4 divisors. Its prime factorisation is 139 × 307. Divisors (4): 1, 139, 307, 42673.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 42673: a semiprime: 139 × 307, the product of two primes.
- 2
42673 is composite. Its prime factorisation is
- 3
The divisors add up to 43120; without 42673 itself that is 447, so 42673 is deficient (447 is less than 42673). Euler's totient φ(42673) = 42228 numbers up to 42673 share no factor with it.
- 4
The digits of 42673 add up to 22, and repeating that until one digit is left gives the digital root 4. The Collatz sequence (halve if even, else 3n+1) takes 57 steps to reach 1.
LaTeX source of the formulas on this page
\[ 42673 = 139 \times 307 \]
42673 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 43120 |
| Euler totient φ(n) | 42228 |
| Square | 1820984929 |
| Cube | 77706889875217 |
| Square root | 206.574442 |
| Digit sum / digital root | 22 / 4 |
| Collatz steps to 1 | 57 |
| Scientific notation | 4.2673 × |
42673 in other forms
| Form | Value |
|---|---|
| In words | forty-two thousand six hundred and seventy-three |
| Binary (base 2) | 1010011010110001 |
| Octal (base 8) | 123261 |
| Hexadecimal (base 16) | A6B1 |
| Base 3 | 2011112111 |
| As time | 42673 seconds = 11 h 51 min 13 s |
Is 42673 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 3) | 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 1) | 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 3) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 4) | 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 42673 a prime number?
No. 42673 = 139 × 307, so it is divisible by 139.
What are the factors of 42673?
1, 139, 307, 42673.
What is 42673 in binary?
1010011010110001 (hexadecimal A6B1, octal 123261).
What is the square root of 42673?
About 206.5744.
Is 42673 divisible by 3?
No. Its digits add up to 22, which is not a multiple of 3.
What is special about the number 42673?
42673 is a semiprime: 139 × 307, the product of two primes.