7,42,721 in words
7,42,721
seven lakh forty-two thousand seven hundred and twenty-one
7,42,721 is written seven lakh forty-two thousand seven hundred and twenty-one.
Ways to write it
- International system
- seven hundred and forty-two thousand seven hundred and twenty-one
- Indian system
- seven lakh forty-two thousand seven hundred and twenty-one
- As an ordinal
- seven lakh forty-two thousand seven hundred and twenty-first
- Expanded form
- 7,00,000 + 40,000 + 2,000 + 700 + 20 + 1
Place value
| Place | Digit | Value |
|---|---|---|
| lakhs | 7 | 7,00,000 |
| ten thousands | 4 | 40,000 |
| thousands | 2 | 2,000 |
| hundreds | 7 | 700 |
| tens | 2 | 20 |
| ones | 1 | 1 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Composite
- Factors
- 1, 7, 1,06,103 and 7,42,721 (4 factors)
- First 10 multiples
- 7,42,721, 14,85,442, 22,28,163, 29,70,884, 37,13,605, 44,56,326, 51,99,047, 59,41,768, 66,84,489, 74,27,210
- Square
- 7,42,721 × 7,42,721 = 5,51,63,44,83,841
- Square root
- ≈ 861.81
- Sum of the digits
- 7 + 4 + 2 + 7 + 2 + 1 = 23
- Rounded to the nearest 10
- 7,42,720
- Rounded to the nearest 100
- 7,42,700
- Rounded to the nearest 1000
- 7,43,000
- Number before
- 7,42,720
- Number after
- 7,42,722
- In binary
10110101010101000001
Quick check
What number comes just after 7,42,721?
Show the answer
7,42,722
Is 7,42,721 even or odd?
Show the answer
Odd
What is 7,42,721 + 10?
Show the answer
7,42,731
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 7,42,721 in words?
7,42,721 is written "seven lakh forty-two thousand seven hundred and twenty-one".
Is 7,42,721 a prime number?
No. 7,42,721 is a composite number, because it has more than two factors.
What are the factors of 7,42,721?
The factors of 7,42,721 are 1, 7, 1,06,103 and 7,42,721.