The number 84242
84242 is a composite number with 8 divisors. Its prime factorisation is 2 × 73 × 577. Divisors (8): 1, 2, 73, 146, 577, 1154, 42121, 84242.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
84242 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
84242 is composite. Its prime factorisation is
- 3
The divisors add up to 128316; without 84242 itself that is 44074, so 84242 is deficient (44074 is less than 84242). Euler's totient φ(84242) = 41472 numbers up to 84242 share no factor with it.
- 4
The digits of 84242 add up to 20, and repeating that until one digit is left gives the digital root 2. The Collatz sequence (halve if even, else 3n+1) takes 89 steps to reach 1.
LaTeX source of the formulas on this page
\[ 84242 = 2 \times 73 \times 577 \]
84242 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 128316 |
| Euler totient φ(n) | 41472 |
| Square | 7096714564 |
| Cube | 597841428300488 |
| Square root | 290.244724 |
| Digit sum / digital root | 20 / 2 |
| Collatz steps to 1 | 89 |
| Scientific notation | 8.4242 × |
84242 in other forms
| Form | Value |
|---|---|
| In words | eighty-four thousand two hundred and forty-two |
| Binary (base 2) | 10100100100010010 |
| Octal (base 8) | 244422 |
| Hexadecimal (base 16) | 14912 |
| Base 3 | 11021120002 |
| As time | 84242 seconds = 23 h 24 min 2 s |
Is 84242 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (84242 ÷ 2 = 42121) | 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 2) | 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 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 2) | 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 4) | 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 84242 a prime number?
No. 84242 = 2 × 73 × 577, so it is divisible by 2.
What are the factors of 84242?
1, 2, 73, 146, 577, 1154, 42121, 84242.
What is 84242 in binary?
10100100100010010 (hexadecimal 14912, octal 244422).
What is the square root of 84242?
About 290.2447.
Is 84242 divisible by 3?
No. Its digits add up to 20, which is not a multiple of 3.
What is special about the number 84242?
It is a composite number with 8 divisors.