The number 42343
42343 is a composite number with 8 divisors. Its prime factorisation is 7 × 23 × 263. Divisors (8): 1, 7, 23, 161, 263, 1841, 6049, 42343.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
42343 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
42343 is composite. Its prime factorisation is
- 3
The divisors add up to 50688; without 42343 itself that is 8345, so 42343 is deficient (8345 is less than 42343). Euler's totient φ(42343) = 34584 numbers up to 42343 share no factor with it.
- 4
The digits of 42343 add up to 16, and repeating that until one digit is left gives the digital root 7. The Collatz sequence (halve if even, else 3n+1) takes 80 steps to reach 1.
LaTeX source of the formulas on this page
\[ 42343 = 7 \times 23 \times 263 \]
42343 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 50688 |
| Euler totient φ(n) | 34584 |
| Square | 1792929649 |
| Cube | 75918020127607 |
| Square root | 205.774148 |
| Digit sum / digital root | 16 / 7 |
| Collatz steps to 1 | 80 |
| Scientific notation | 4.2343 × |
42343 in other forms
| Form | Value |
|---|---|
| In words | forty-two thousand three hundred and forty-three |
| Binary (base 2) | 1010010101100111 |
| Octal (base 8) | 122547 |
| Hexadecimal (base 16) | A567 |
| Base 3 | 2011002021 |
| As time | 42343 seconds = 11 h 45 min 43 s |
Is 42343 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 3) | 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 | Yes (42343 ÷ 7 = 6049) | 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 7) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 7) | 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 7) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 42343 a prime number?
No. 42343 = 7 × 23 × 263, so it is divisible by 7.
What are the factors of 42343?
1, 7, 23, 161, 263, 1841, 6049, 42343.
What is 42343 in binary?
1010010101100111 (hexadecimal A567, octal 122547).
What is the square root of 42343?
About 205.7741.
Is 42343 divisible by 3?
No. Its digits add up to 16, which is not a multiple of 3.
What is special about the number 42343?
It is a composite number with 8 divisors.