The number 74342
74342 is a composite number with 4 divisors. Its prime factorisation is 2 × 37171. Divisors (4): 1, 2, 37171, 74342.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 74342: a happy number: repeatedly adding the squares of its digits reaches 1; a semiprime: 2 × 37171, the product of two primes.
- 2
74342 is composite. Its prime factorisation is
- 3
The divisors add up to 111516; without 74342 itself that is 37174, so 74342 is deficient (37174 is less than 74342). Euler's totient φ(74342) = 37170 numbers up to 74342 share no factor with it.
- 4
The digits of 74342 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 63 steps to reach 1.
LaTeX source of the formulas on this page
\[ 74342 = 2 \times 37171 \]
74342 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 111516 |
| Euler totient φ(n) | 37170 |
| Square | 5526732964 |
| Cube | 410868382009688 |
| Square root | 272.657294 |
| Digit sum / digital root | 20 / 2 |
| Collatz steps to 1 | 63 |
| Scientific notation | 7.4342 × |
74342 in other forms
| Form | Value |
|---|---|
| In words | seventy-four thousand three hundred and forty-two |
| Binary (base 2) | 10010001001100110 |
| Octal (base 8) | 221146 |
| Hexadecimal (base 16) | 12266 |
| Base 3 | 10202222102 |
| As time | 74342 seconds = 20 h 39 min 2 s |
Is 74342 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (74342 ÷ 2 = 37171) | 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 2) | 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 6) | 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 74342 a prime number?
No. 74342 = 2 × 37171, so it is divisible by 2.
What are the factors of 74342?
1, 2, 37171, 74342.
What is 74342 in binary?
10010001001100110 (hexadecimal 12266, octal 221146).
What is the square root of 74342?
About 272.6573.
Is 74342 divisible by 3?
No. Its digits add up to 20, which is not a multiple of 3.
What is special about the number 74342?
74342 is a happy number: repeatedly adding the squares of its digits reaches 1; a semiprime: 2 × 37171, the product of two primes.