The number 80242
80242 is a composite number with 8 divisors. Its prime factorisation is 2 × 53 × 757. Divisors (8): 1, 2, 53, 106, 757, 1514, 40121, 80242.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
80242 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
80242 is composite. Its prime factorisation is
- 3
The divisors add up to 122796; without 80242 itself that is 42554, so 80242 is deficient (42554 is less than 80242). Euler's totient φ(80242) = 39312 numbers up to 80242 share no factor with it.
- 4
The digits of 80242 add up to 16, and repeating that until one digit is left gives the digital root 7. The Collatz sequence (halve if even, else 3n+1) takes 50 steps to reach 1.
LaTeX source of the formulas on this page
\[ 80242 = 2 \times 53 \times 757 \]
80242 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 122796 |
| Euler totient φ(n) | 39312 |
| Square | 6438778564 |
| Cube | 516660469532488 |
| Square root | 283.270189 |
| Digit sum / digital root | 16 / 7 |
| Collatz steps to 1 | 50 |
| Scientific notation | 8.0242 × |
80242 in other forms
| Form | Value |
|---|---|
| In words | eighty thousand two hundred and forty-two |
| Binary (base 2) | 10011100101110010 |
| Octal (base 8) | 234562 |
| Hexadecimal (base 16) | 13972 |
| Base 3 | 11002001221 |
| As time | 80242 seconds = 22 h 17 min 22 s |
Is 80242 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (80242 ÷ 2 = 40121) | 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 | No (remainder 1) | 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 7) | 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 8) | 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 80242 a prime number?
No. 80242 = 2 × 53 × 757, so it is divisible by 2.
What are the factors of 80242?
1, 2, 53, 106, 757, 1514, 40121, 80242.
What is 80242 in binary?
10011100101110010 (hexadecimal 13972, octal 234562).
What is the square root of 80242?
About 283.2702.
Is 80242 divisible by 3?
No. Its digits add up to 16, which is not a multiple of 3.
What is special about the number 80242?
It is a composite number with 8 divisors.