The number 14021
14021 is a composite number with 4 divisors. Its prime factorisation is 7 × 2003. Divisors (4): 1, 7, 2003, 14021.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 14021: a semiprime: 7 × 2003, the product of two primes.
- 2
14021 is composite. Its prime factorisation is
- 3
The divisors add up to 16032; without 14021 itself that is 2011, so 14021 is deficient (2011 is less than 14021). Euler's totient φ(14021) = 12012 numbers up to 14021 share no factor with it.
- 4
The digits of 14021 add up to 8, and repeating that until one digit is left gives the digital root 8. The Collatz sequence (halve if even, else 3n+1) takes 58 steps to reach 1.
LaTeX source of the formulas on this page
\[ 14021 = 7 \times 2003 \]
14021 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 16032 |
| Euler totient φ(n) | 12012 |
| Square | 196588441 |
| Cube | 2756366531261 |
| Square root | 118.410304 |
| Digit sum / digital root | 8 / 8 |
| Collatz steps to 1 | 58 |
| Scientific notation | 1.4021 × |
14021 in other forms
| Form | Value |
|---|---|
| In words | fourteen thousand and twenty-one |
| Binary (base 2) | 11011011000101 |
| Octal (base 8) | 33305 |
| Hexadecimal (base 16) | 36C5 |
| Base 3 | 201020022 |
| As time | 14021 seconds = 3 h 53 min 41 s |
Is 14021 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 2) | 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 5) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | Yes (14021 ÷ 7 = 2003) | 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 8) | 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 7) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 5) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 14021 a prime number?
No. 14021 = 7 × 2003, so it is divisible by 7.
What are the factors of 14021?
1, 7, 2003, 14021.
What is 14021 in binary?
11011011000101 (hexadecimal 36C5, octal 33305).
What is the square root of 14021?
About 118.4103.
Is 14021 divisible by 3?
No. Its digits add up to 8, which is not a multiple of 3.
What is special about the number 14021?
14021 is a semiprime: 7 × 2003, the product of two primes.