The number 35421
35421 is a composite number with 4 divisors. Its prime factorisation is 3 × 11807. Divisors (4): 1, 3, 11807, 35421.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 35421: a semiprime: 3 × 11807, the product of two primes.
- 2
35421 is composite. Its prime factorisation is
- 3
The divisors add up to 47232; without 35421 itself that is 11811, so 35421 is deficient (11811 is less than 35421). Euler's totient φ(35421) = 23612 numbers up to 35421 share no factor with it.
- 4
The digits of 35421 add up to 15, and repeating that until one digit is left gives the digital root 6. The Collatz sequence (halve if even, else 3n+1) takes 98 steps to reach 1.
LaTeX source of the formulas on this page
\[ 35421 = 3 \times 11807 \]
35421 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 47232 |
| Euler totient φ(n) | 23612 |
| Square | 1254647241 |
| Cube | 44440859923461 |
| Square root | 188.204676 |
| Digit sum / digital root | 15 / 6 |
| Collatz steps to 1 | 98 |
| Scientific notation | 3.5421 × |
35421 in other forms
| Form | Value |
|---|---|
| In words | thirty-five thousand four hundred and twenty-one |
| Binary (base 2) | 1000101001011101 |
| Octal (base 8) | 105135 |
| Hexadecimal (base 16) | 8A5D |
| Base 3 | 1210120220 |
| As time | 35421 seconds = 9 h 50 min 21 s |
Is 35421 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | No (remainder 1) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | Yes (35421 ÷ 3 = 11807) | A number is divisible by 3 if the digits add up to a multiple of 3. |
| 4 | No (remainder 1) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | No (remainder 1) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 3) | 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 5) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 6) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 1) | 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 9) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 35421 a prime number?
No. 35421 = 3 × 11807, so it is divisible by 3.
What are the factors of 35421?
1, 3, 11807, 35421.
What is 35421 in binary?
1000101001011101 (hexadecimal 8A5D, octal 105135).
What is the square root of 35421?
About 188.2047.
Is 35421 divisible by 3?
Yes. Its digits add up to 15, a multiple of 3.
What is special about the number 35421?
35421 is a semiprime: 3 × 11807, the product of two primes.