40,721 in words
40,721
forty thousand seven hundred and twenty-one
40,721 is written forty thousand seven hundred and twenty-one.
Ways to write it
- As an ordinal
- forty thousand seven hundred and twenty-first
- Expanded form
- 40,000 + 700 + 20 + 1
Place value
| Place | Digit | Value |
|---|---|---|
| ten thousands | 4 | 40,000 |
| thousands | 0 | 0 |
| hundreds | 7 | 700 |
| tens | 2 | 20 |
| ones | 1 | 1 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Composite
- Factors
- 1, 43, 947 and 40,721 (4 factors)
- First 10 multiples
- 40,721, 81,442, 122,163, 162,884, 203,605, 244,326, 285,047, 325,768, 366,489, 407,210
- Square
- 40,721 × 40,721 = 1,658,199,841
- Square root
- ≈ 201.79
- Sum of the digits
- 4 + 0 + 7 + 2 + 1 = 14
- Rounded to the nearest 10
- 40,720
- Rounded to the nearest 100
- 40,700
- Rounded to the nearest 1000
- 41,000
- Number before
- 40,720
- Number after
- 40,722
- In binary
1001111100010001
Quick check
What number comes just after 40,721?
Show the answer
40,722
Is 40,721 even or odd?
Show the answer
Odd
What is 40,721 + 10?
Show the answer
40,731
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 40,721 in words?
40,721 is written "forty thousand seven hundred and twenty-one".
Is 40,721 a prime number?
No. 40,721 is a composite number, because it has more than two factors.
What are the factors of 40,721?
The factors of 40,721 are 1, 43, 947 and 40,721.