The number 16241
16241 is a composite number with 4 divisors. Its prime factorisation is 109 × 149. Divisors (4): 1, 109, 149, 16241.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 16241: a semiprime: 109 × 149, the product of two primes.
- 2
16241 is composite. Its prime factorisation is
- 3
The divisors add up to 16500; without 16241 itself that is 259, so 16241 is deficient (259 is less than 16241). Euler's totient φ(16241) = 15984 numbers up to 16241 share no factor with it.
- 4
The digits of 16241 add up to 14, and repeating that until one digit is left gives the digital root 5. The Collatz sequence (halve if even, else 3n+1) takes 40 steps to reach 1.
LaTeX source of the formulas on this page
\[ 16241 = 109 \times 149 \]
16241 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 16500 |
| Euler totient φ(n) | 15984 |
| Square | 263770081 |
| Cube | 4283889885521 |
| Square root | 127.440182 |
| Digit sum / digital root | 14 / 5 |
| Collatz steps to 1 | 40 |
| Scientific notation | 1.6241 × |
16241 in other forms
| Form | Value |
|---|---|
| In words | sixteen thousand two hundred and forty-one |
| Binary (base 2) | 11111101110001 |
| Octal (base 8) | 37561 |
| Hexadecimal (base 16) | 3F71 |
| Base 3 | 211021112 |
| As time | 16241 seconds = 4 h 30 min 41 s |
Is 16241 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 | No (remainder 1) | 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 1) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 5) | 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 5) | 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 16241 a prime number?
No. 16241 = 109 × 149, so it is divisible by 109.
What are the factors of 16241?
1, 109, 149, 16241.
What is 16241 in binary?
11111101110001 (hexadecimal 3F71, octal 37561).
What is the square root of 16241?
About 127.4402.
Is 16241 divisible by 3?
No. Its digits add up to 14, which is not a multiple of 3.
What is special about the number 16241?
16241 is a semiprime: 109 × 149, the product of two primes.