The number 36121
36121 is a composite number with 4 divisors. Its prime factorisation is 41 × 881. Divisors (4): 1, 41, 881, 36121.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 36121: a semiprime: 41 × 881, the product of two primes.
- 2
36121 is composite. Its prime factorisation is
- 3
The divisors add up to 37044; without 36121 itself that is 923, so 36121 is deficient (923 is less than 36121). Euler's totient φ(36121) = 35200 numbers up to 36121 share no factor with it.
- 4
The digits of 36121 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 186 steps to reach 1.
LaTeX source of the formulas on this page
\[ 36121 = 41 \times 881 \]
36121 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 37044 |
| Euler totient φ(n) | 35200 |
| Square | 1304726641 |
| Cube | 47128030999561 |
| Square root | 190.055255 |
| Digit sum / digital root | 13 / 4 |
| Collatz steps to 1 | 186 |
| Scientific notation | 3.6121 × |
36121 in other forms
| Form | Value |
|---|---|
| In words | thirty-six thousand one hundred and twenty-one |
| Binary (base 2) | 1000110100011001 |
| Octal (base 8) | 106431 |
| Hexadecimal (base 16) | 8D19 |
| Base 3 | 1211112211 |
| As time | 36121 seconds = 10 h 2 min 1 s |
Is 36121 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 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 1) | 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 4) | 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 8) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 1) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 36121 a prime number?
No. 36121 = 41 × 881, so it is divisible by 41.
What are the factors of 36121?
1, 41, 881, 36121.
What is 36121 in binary?
1000110100011001 (hexadecimal 8D19, octal 106431).
What is the square root of 36121?
About 190.0553.
Is 36121 divisible by 3?
No. Its digits add up to 13, which is not a multiple of 3.
What is special about the number 36121?
36121 is a semiprime: 41 × 881, the product of two primes.