The number 43402
43402 is a composite number with 4 divisors. Its prime factorisation is 2 × 21701. Divisors (4): 1, 2, 21701, 43402.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 43402: a semiprime: 2 × 21701, the product of two primes.
- 2
43402 is composite. Its prime factorisation is
- 3
The divisors add up to 65106; without 43402 itself that is 21704, so 43402 is deficient (21704 is less than 43402). Euler's totient φ(43402) = 21700 numbers up to 43402 share no factor with it.
- 4
The digits of 43402 add up to 13, and repeating that until one digit is left gives the digital root 4. The Collatz sequence (halve if even, else 3n+1) takes 163 steps to reach 1.
LaTeX source of the formulas on this page
\[ 43402 = 2 \times 21701 \]
43402 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 65106 |
| Euler totient φ(n) | 21700 |
| Square | 1883733604 |
| Cube | 81757805880808 |
| Square root | 208.331467 |
| Digit sum / digital root | 13 / 4 |
| Collatz steps to 1 | 163 |
| Scientific notation | 4.3402 × |
43402 in other forms
| Form | Value |
|---|---|
| In words | forty-three thousand four hundred and two |
| Binary (base 2) | 1010100110001010 |
| Octal (base 8) | 124612 |
| Hexadecimal (base 16) | A98A |
| Base 3 | 2012112111 |
| As time | 43402 seconds = 12 h 3 min 22 s |
Is 43402 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (43402 ÷ 2 = 21701) | 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 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 4) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 2) | 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 4) | 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 10) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 43402 a prime number?
No. 43402 = 2 × 21701, so it is divisible by 2.
What are the factors of 43402?
1, 2, 21701, 43402.
What is 43402 in binary?
1010100110001010 (hexadecimal A98A, octal 124612).
What is the square root of 43402?
About 208.3315.
Is 43402 divisible by 3?
No. Its digits add up to 13, which is not a multiple of 3.
What is special about the number 43402?
43402 is a semiprime: 2 × 21701, the product of two primes.