123,021 in words
123,021
one hundred and twenty-three thousand and twenty-one
123,021 is written one hundred and twenty-three thousand and twenty-one.
Ways to write it
- As an ordinal
- one hundred and twenty-three thousand and twenty-first
- Expanded form
- 100,000 + 20,000 + 3,000 + 20 + 1
Place value
| Place | Digit | Value |
|---|---|---|
| hundred thousands | 1 | 100,000 |
| ten thousands | 2 | 20,000 |
| thousands | 3 | 3,000 |
| hundreds | 0 | 0 |
| tens | 2 | 20 |
| ones | 1 | 1 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Composite
- Factors
- 1, 3, 9, 13,669, 41,007 and 123,021 (6 factors)
- First 10 multiples
- 123,021, 246,042, 369,063, 492,084, 615,105, 738,126, 861,147, 984,168, 1,107,189, 1,230,210
- Square
- 123,021 × 123,021 = 15,134,166,441
- Square root
- ≈ 350.74
- Sum of the digits
- 1 + 2 + 3 + 0 + 2 + 1 = 9
- Rounded to the nearest 10
- 123,020
- Rounded to the nearest 100
- 123,000
- Rounded to the nearest 1000
- 123,000
- Number before
- 123,020
- Number after
- 123,022
- In binary
11110000010001101
Quick check
What number comes just after 123,021?
Show the answer
123,022
Is 123,021 even or odd?
Show the answer
Odd
What is 123,021 + 10?
Show the answer
123,031
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 123,021 in words?
123,021 is written "one hundred and twenty-three thousand and twenty-one".
Is 123,021 a prime number?
No. 123,021 is a composite number, because it has more than two factors.
What are the factors of 123,021?
The factors of 123,021 are 1, 3, 9, 13,669, 41,007 and 123,021.