42,509 in words
42,509
forty-two thousand five hundred nine
42,509 is written forty-two thousand five hundred nine.
Ways to write it
- As an ordinal
- forty-two thousand five hundred ninth
- Expanded form
- 40,000 + 2,000 + 500 + 9
Place value
| Place | Digit | Value |
|---|---|---|
| ten thousands | 4 | 40,000 |
| thousands | 2 | 2,000 |
| hundreds | 5 | 500 |
| tens | 0 | 0 |
| ones | 9 | 9 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Prime
- Factors
- 1 and 42,509 (2 factors)
- First 10 multiples
- 42,509, 85,018, 127,527, 170,036, 212,545, 255,054, 297,563, 340,072, 382,581, 425,090
- Square
- 42,509 × 42,509 = 1,807,015,081
- Square root
- ≈ 206.18
- Sum of the digits
- 4 + 2 + 5 + 0 + 9 = 20
- Rounded to the nearest 10
- 42,510
- Rounded to the nearest 100
- 42,500
- Rounded to the nearest 1000
- 43,000
- Number before
- 42,508
- Number after
- 42,510
- In binary
1010011000001101
Quick check
What number comes just after 42,509?
Show the answer
42,510
Is 42,509 even or odd?
Show the answer
Odd
What is 42,509 + 10?
Show the answer
42,519
Practise with a game
Factors, Multiples & Primes
Multiples, factors, prime numbers, square numbers and prime factors.
Number Patterns
Find the missing number in a sequence.Frequently asked questions
How do you write 42,509 in words?
42,509 is written "forty-two thousand five hundred nine".
Is 42,509 a prime number?
Yes. 42,509 is a prime number: its only factors are 1 and 42,509.
What are the factors of 42,509?
The factors of 42,509 are 1 and 42,509.