The number 74242
74242 is a composite number with 8 divisors. Its prime factorisation is 2 × 7 × 5303. Divisors (8): 1, 2, 7, 14, 5303, 10606, 37121, 74242.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
74242 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
74242 is composite. Its prime factorisation is
- 3
The divisors add up to 127296; without 74242 itself that is 53054, so 74242 is deficient (53054 is less than 74242). Euler's totient φ(74242) = 31812 numbers up to 74242 share no factor with it.
- 4
The digits of 74242 add up to 19, and repeating that until one digit is left gives the digital root 1. The Collatz sequence (halve if even, else 3n+1) takes 112 steps to reach 1.
LaTeX source of the formulas on this page
\[ 74242 = 2 \times 7 \times 5303 \]
74242 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 127296 |
| Euler totient φ(n) | 31812 |
| Square | 5511874564 |
| Cube | 409212591380488 |
| Square root | 272.473852 |
| Digit sum / digital root | 19 / 1 |
| Collatz steps to 1 | 112 |
| Scientific notation | 7.4242 × |
74242 in other forms
| Form | Value |
|---|---|
| In words | seventy-four thousand two hundred and forty-two |
| Binary (base 2) | 10010001000000010 |
| Octal (base 8) | 221002 |
| Hexadecimal (base 16) | 12202 |
| Base 3 | 10202211201 |
| As time | 74242 seconds = 20 h 37 min 22 s |
Is 74242 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (74242 ÷ 2 = 37121) | 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 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 | No (remainder 4) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | Yes (74242 ÷ 7 = 10606) | 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 1) | 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 3) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 10) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 74242 a prime number?
No. 74242 = 2 × 7 × 5303, so it is divisible by 2.
What are the factors of 74242?
1, 2, 7, 14, 5303, 10606, 37121, 74242.
What is 74242 in binary?
10010001000000010 (hexadecimal 12202, octal 221002).
What is the square root of 74242?
About 272.4739.
Is 74242 divisible by 3?
No. Its digits add up to 19, which is not a multiple of 3.
What is special about the number 74242?
It is a composite number with 8 divisors.