The number 70242
70242 is a composite number with 16 divisors. Its prime factorisation is 2 × 3 × 23 × 509. Divisors (16): 1, 2, 3, 6, 23, 46, 69, 138, 509, 1018, 1527, 3054, 11707, 23414, 35121, 70242.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
70242 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
70242 is composite. Its prime factorisation is
- 3
The divisors add up to 146880; without 70242 itself that is 76638, so 70242 is abundant (76638 is more than 70242). Euler's totient φ(70242) = 22352 numbers up to 70242 share no factor with it.
- 4
The digits of 70242 add up to 15, and repeating that until one digit is left gives the digital root 6. The Collatz sequence (halve if even, else 3n+1) takes 143 steps to reach 1.
LaTeX source of the formulas on this page
\[ 70242 = 2 \times 3 \times 23 \times 509 \]
70242 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 16 |
| Sum of divisors | 146880 |
| Euler totient φ(n) | 22352 |
| Square | 4933938564 |
| Cube | 346569712612488 |
| Square root | 265.032074 |
| Digit sum / digital root | 15 / 6 |
| Collatz steps to 1 | 143 |
| Scientific notation | 7.0242 × |
70242 in other forms
| Form | Value |
|---|---|
| In words | seventy thousand two hundred and forty-two |
| Binary (base 2) | 10001001001100010 |
| Octal (base 8) | 211142 |
| Hexadecimal (base 16) | 11262 |
| Base 3 | 10120100120 |
| As time | 70242 seconds = 19 h 30 min 42 s |
Is 70242 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (70242 ÷ 2 = 35121) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | Yes (70242 ÷ 3 = 23414) | 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 2) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | Yes (70242 ÷ 6 = 11707) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 4) | 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 6) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 2) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 7) | 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 70242 a prime number?
No. 70242 = 2 × 3 × 23 × 509, so it is divisible by 2.
What are the factors of 70242?
1, 2, 3, 6, 23, 46, 69, 138, 509, 1018, 1527, 3054, 11707, 23414, 35121, 70242.
What is 70242 in binary?
10001001001100010 (hexadecimal 11262, octal 211142).
What is the square root of 70242?
About 265.0321.
Is 70242 divisible by 3?
Yes. Its digits add up to 15, a multiple of 3.
What is special about the number 70242?
It is a composite number with 16 divisors.