138,421 in words
138,421
one hundred and thirty-eight thousand four hundred and twenty-one
138,421 is written one hundred and thirty-eight thousand four hundred and twenty-one.
Ways to write it
- As an ordinal
- one hundred and thirty-eight thousand four hundred and twenty-first
- Expanded form
- 100,000 + 30,000 + 8,000 + 400 + 20 + 1
Place value
| Place | Digit | Value |
|---|---|---|
| hundred thousands | 1 | 100,000 |
| ten thousands | 3 | 30,000 |
| thousands | 8 | 8,000 |
| hundreds | 4 | 400 |
| tens | 2 | 20 |
| ones | 1 | 1 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Composite
- Factors
- 1, 149, 929 and 138,421 (4 factors)
- First 10 multiples
- 138,421, 276,842, 415,263, 553,684, 692,105, 830,526, 968,947, 1,107,368, 1,245,789, 1,384,210
- Square
- 138,421 × 138,421 = 19,160,373,241
- Square root
- ≈ 372.05
- Sum of the digits
- 1 + 3 + 8 + 4 + 2 + 1 = 19
- Rounded to the nearest 10
- 138,420
- Rounded to the nearest 100
- 138,400
- Rounded to the nearest 1000
- 138,000
- Number before
- 138,420
- Number after
- 138,422
- In binary
100001110010110101
Quick check
What number comes just after 138,421?
Show the answer
138,422
Is 138,421 even or odd?
Show the answer
Odd
What is 138,421 + 10?
Show the answer
138,431
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 138,421 in words?
138,421 is written "one hundred and thirty-eight thousand four hundred and twenty-one".
Is 138,421 a prime number?
No. 138,421 is a composite number, because it has more than two factors.
What are the factors of 138,421?
The factors of 138,421 are 1, 149, 929 and 138,421.