The number 43221
43221 is a composite number with 4 divisors. Its prime factorisation is 3 × 14407. Divisors (4): 1, 3, 14407, 43221.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 43221: a semiprime: 3 × 14407, the product of two primes.
- 2
43221 is composite. Its prime factorisation is
- 3
The divisors add up to 57632; without 43221 itself that is 14411, so 43221 is deficient (14411 is less than 43221). Euler's totient φ(43221) = 28812 numbers up to 43221 share no factor with it.
- 4
The digits of 43221 add up to 12, and repeating that until one digit is left gives the digital root 3. The Collatz sequence (halve if even, else 3n+1) takes 119 steps to reach 1.
LaTeX source of the formulas on this page
\[ 43221 = 3 \times 14407 \]
43221 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 57632 |
| Euler totient φ(n) | 28812 |
| Square | 1868054841 |
| Cube | 80739198282861 |
| Square root | 207.896609 |
| Digit sum / digital root | 12 / 3 |
| Collatz steps to 1 | 119 |
| Scientific notation | 4.3221 × |
43221 in other forms
| Form | Value |
|---|---|
| In words | forty-three thousand two hundred and twenty-one |
| Binary (base 2) | 1010100011010101 |
| Octal (base 8) | 124325 |
| Hexadecimal (base 16) | A8D5 |
| Base 3 | 2012021210 |
| As time | 43221 seconds = 12 h 0 min 21 s |
Is 43221 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 (43221 ÷ 3 = 14407) | 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 1) | 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 5) | 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 1) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 2) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 9) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 43221 a prime number?
No. 43221 = 3 × 14407, so it is divisible by 3.
What are the factors of 43221?
1, 3, 14407, 43221.
What is 43221 in binary?
1010100011010101 (hexadecimal A8D5, octal 124325).
What is the square root of 43221?
About 207.8966.
Is 43221 divisible by 3?
Yes. Its digits add up to 12, a multiple of 3.
What is special about the number 43221?
43221 is a semiprime: 3 × 14407, the product of two primes.