The number 74042
74042 is a composite number with 4 divisors. Its prime factorisation is 2 × 37021. Divisors (4): 1, 2, 37021, 74042.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 74042: a semiprime: 2 × 37021, the product of two primes.
- 2
74042 is composite. Its prime factorisation is
- 3
The divisors add up to 111066; without 74042 itself that is 37024, so 74042 is deficient (37024 is less than 74042). Euler's totient φ(74042) = 37020 numbers up to 74042 share no factor with it.
- 4
The digits of 74042 add up to 17, and repeating that until one digit is left gives the digital root 8. The Collatz sequence (halve if even, else 3n+1) takes 156 steps to reach 1.
LaTeX source of the formulas on this page
\[ 74042 = 2 \times 37021 \]
74042 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 111066 |
| Euler totient φ(n) | 37020 |
| Square | 5482217764 |
| Cube | 405914367682088 |
| Square root | 272.106597 |
| Digit sum / digital root | 17 / 8 |
| Collatz steps to 1 | 156 |
| Scientific notation | 7.4042 × |
74042 in other forms
| Form | Value |
|---|---|
| In words | seventy-four thousand and forty-two |
| Binary (base 2) | 10010000100111010 |
| Octal (base 8) | 220472 |
| Hexadecimal (base 16) | 1213A |
| Base 3 | 10202120022 |
| As time | 74042 seconds = 20 h 34 min 2 s |
Is 74042 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (74042 ÷ 2 = 37021) | 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 3) | 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 8) | 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 1) | 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 74042 a prime number?
No. 74042 = 2 × 37021, so it is divisible by 2.
What are the factors of 74042?
1, 2, 37021, 74042.
What is 74042 in binary?
10010000100111010 (hexadecimal 1213A, octal 220472).
What is the square root of 74042?
About 272.1066.
Is 74042 divisible by 3?
No. Its digits add up to 17, which is not a multiple of 3.
What is special about the number 74042?
74042 is a semiprime: 2 × 37021, the product of two primes.