The number 40901
40901 is a composite number with 4 divisors. Its prime factorisation is 7 × 5843. Divisors (4): 1, 7, 5843, 40901.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 40901: a semiprime: 7 × 5843, the product of two primes.
- 2
40901 is composite. Its prime factorisation is
- 3
The divisors add up to 46752; without 40901 itself that is 5851, so 40901 is deficient (5851 is less than 40901). Euler's totient φ(40901) = 35052 numbers up to 40901 share no factor with it.
- 4
The digits of 40901 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 62 steps to reach 1.
LaTeX source of the formulas on this page
\[ 40901 = 7 \times 5843 \]
40901 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 46752 |
| Euler totient φ(n) | 35052 |
| Square | 1672891801 |
| Cube | 68422947552701 |
| Square root | 202.239956 |
| Digit sum / digital root | 14 / 5 |
| Collatz steps to 1 | 62 |
| Scientific notation | 4.0901 × |
40901 in other forms
| Form | Value |
|---|---|
| In words | forty thousand nine hundred and one |
| Binary (base 2) | 1001111111000101 |
| Octal (base 8) | 117705 |
| Hexadecimal (base 16) | 9FC5 |
| Base 3 | 2002002212 |
| As time | 40901 seconds = 11 h 21 min 41 s |
Is 40901 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 (40901 ÷ 7 = 5843) | 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 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 3) | 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 40901 a prime number?
No. 40901 = 7 × 5843, so it is divisible by 7.
What are the factors of 40901?
1, 7, 5843, 40901.
What is 40901 in binary?
1001111111000101 (hexadecimal 9FC5, octal 117705).
What is the square root of 40901?
About 202.2400.
Is 40901 divisible by 3?
No. Its digits add up to 14, which is not a multiple of 3.
What is special about the number 40901?
40901 is a semiprime: 7 × 5843, the product of two primes.