The number 42339
42339 is a composite number with 8 divisors. Its prime factorisation is 3 × 11 × 1283. Divisors (8): 1, 3, 11, 33, 1283, 3849, 14113, 42339.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
42339 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
42339 is composite. Its prime factorisation is
- 3
The divisors add up to 61632; without 42339 itself that is 19293, so 42339 is deficient (19293 is less than 42339). Euler's totient φ(42339) = 25640 numbers up to 42339 share no factor with it.
- 4
The digits of 42339 add up to 21, and repeating that until one digit is left gives the digital root 3. The Collatz sequence (halve if even, else 3n+1) takes 150 steps to reach 1.
LaTeX source of the formulas on this page
\[ 42339 = 3 \times 11 \times 1283 \]
42339 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 61632 |
| Euler totient φ(n) | 25640 |
| Square | 1792590921 |
| Cube | 75896507004219 |
| Square root | 205.764428 |
| Digit sum / digital root | 21 / 3 |
| Collatz steps to 1 | 150 |
| Scientific notation | 4.2339 × |
42339 in other forms
| Form | Value |
|---|---|
| In words | forty-two thousand three hundred and thirty-nine |
| Binary (base 2) | 1010010101100011 |
| Octal (base 8) | 122543 |
| Hexadecimal (base 16) | A563 |
| Base 3 | 2011002010 |
| As time | 42339 seconds = 11 h 45 min 39 s |
Is 42339 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 | Yes (42339 ÷ 3 = 14113) | 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 3) | 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 3) | 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 | Yes (42339 ÷ 11 = 3849) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 3) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 42339 a prime number?
No. 42339 = 3 × 11 × 1283, so it is divisible by 3.
What are the factors of 42339?
1, 3, 11, 33, 1283, 3849, 14113, 42339.
What is 42339 in binary?
1010010101100011 (hexadecimal A563, octal 122543).
What is the square root of 42339?
About 205.7644.
Is 42339 divisible by 3?
Yes. Its digits add up to 21, a multiple of 3.
What is special about the number 42339?
It is a composite number with 8 divisors.