The number 41018
41018 is a composite number with 4 divisors. Its prime factorisation is 2 × 20509. Divisors (4): 1, 2, 20509, 41018.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 41018: a happy number: repeatedly adding the squares of its digits reaches 1; a semiprime: 2 × 20509, the product of two primes.
- 2
41018 is composite. Its prime factorisation is
- 3
The divisors add up to 61530; without 41018 itself that is 20512, so 41018 is deficient (20512 is less than 41018). Euler's totient φ(41018) = 20508 numbers up to 41018 share no factor with it.
- 4
The digits of 41018 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 150 steps to reach 1.
LaTeX source of the formulas on this page
\[ 41018 = 2 \times 20509 \]
41018 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 61530 |
| Euler totient φ(n) | 20508 |
| Square | 1682476324 |
| Cube | 69011813857832 |
| Square root | 202.529010 |
| Digit sum / digital root | 14 / 5 |
| Collatz steps to 1 | 150 |
| Scientific notation | 4.1018 × |
41018 in other forms
| Form | Value |
|---|---|
| In words | forty-one thousand and eighteen |
| Binary (base 2) | 1010000000111010 |
| Octal (base 8) | 120072 |
| Hexadecimal (base 16) | A03A |
| Base 3 | 2002021012 |
| As time | 41018 seconds = 11 h 23 min 38 s |
Is 41018 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (41018 ÷ 2 = 20509) | 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 2) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | No (remainder 3) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 2) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 5) | 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 2) | 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 8) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 10) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 2) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 41018 a prime number?
No. 41018 = 2 × 20509, so it is divisible by 2.
What are the factors of 41018?
1, 2, 20509, 41018.
What is 41018 in binary?
1010000000111010 (hexadecimal A03A, octal 120072).
What is the square root of 41018?
About 202.5290.
Is 41018 divisible by 3?
No. Its digits add up to 14, which is not a multiple of 3.
What is special about the number 41018?
41018 is a happy number: repeatedly adding the squares of its digits reaches 1; a semiprime: 2 × 20509, the product of two primes.