The number 42618
42618 is a composite number with 8 divisors. Its prime factorisation is 2 × 3 × 7103. Divisors (8): 1, 2, 3, 6, 7103, 14206, 21309, 42618.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
42618 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
42618 is composite. Its prime factorisation is
- 3
The divisors add up to 85248; without 42618 itself that is 42630, so 42618 is abundant (42630 is more than 42618). Euler's totient φ(42618) = 14204 numbers up to 42618 share no factor with it.
- 4
The digits of 42618 add up to 21, and repeating that until one digit is left gives the digital root 3. The Collatz sequence (halve if even, else 3n+1) takes 88 steps to reach 1.
LaTeX source of the formulas on this page
\[ 42618 = 2 \times 3 \times 7103 \]
42618 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 85248 |
| Euler totient φ(n) | 14204 |
| Square | 1816293924 |
| Cube | 77406814453032 |
| Square root | 206.441275 |
| Digit sum / digital root | 21 / 3 |
| Collatz steps to 1 | 88 |
| Scientific notation | 4.2618 × |
42618 in other forms
| Form | Value |
|---|---|
| In words | forty-two thousand six hundred and eighteen |
| Binary (base 2) | 1010011001111010 |
| Octal (base 8) | 123172 |
| Hexadecimal (base 16) | A67A |
| Base 3 | 2011110110 |
| As time | 42618 seconds = 11 h 50 min 18 s |
Is 42618 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (42618 ÷ 2 = 21309) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | Yes (42618 ÷ 3 = 14206) | 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 | Yes (42618 ÷ 6 = 7103) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 2) | 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 3) | 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 4) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 6) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 42618 a prime number?
No. 42618 = 2 × 3 × 7103, so it is divisible by 2.
What are the factors of 42618?
1, 2, 3, 6, 7103, 14206, 21309, 42618.
What is 42618 in binary?
1010011001111010 (hexadecimal A67A, octal 123172).
What is the square root of 42618?
About 206.4413.
Is 42618 divisible by 3?
Yes. Its digits add up to 21, a multiple of 3.
What is special about the number 42618?
It is a composite number with 8 divisors.