138,121 in words
138,121
one hundred thirty-eight thousand one hundred twenty-one
138,121 is written one hundred thirty-eight thousand one hundred twenty-one.
Ways to write it
- As an ordinal
- one hundred thirty-eight thousand one hundred twenty-first
- Expanded form
- 100,000 + 30,000 + 8,000 + 100 + 20 + 1
Place value
| Place | Digit | Value |
|---|---|---|
| hundred thousands | 1 | 100,000 |
| ten thousands | 3 | 30,000 |
| thousands | 8 | 8,000 |
| hundreds | 1 | 100 |
| tens | 2 | 20 |
| ones | 1 | 1 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Composite
- Factors
- 1, 37, 3,733 and 138,121 (4 factors)
- First 10 multiples
- 138,121, 276,242, 414,363, 552,484, 690,605, 828,726, 966,847, 1,104,968, 1,243,089, 1,381,210
- Square
- 138,121 × 138,121 = 19,077,410,641
- Square root
- ≈ 371.65
- Sum of the digits
- 1 + 3 + 8 + 1 + 2 + 1 = 16
- Rounded to the nearest 10
- 138,120
- Rounded to the nearest 100
- 138,100
- Rounded to the nearest 1000
- 138,000
- Number before
- 138,120
- Number after
- 138,122
- In binary
100001101110001001
Quick check
What number comes just after 138,121?
Show the answer
138,122
Is 138,121 even or odd?
Show the answer
Odd
What is 138,121 + 10?
Show the answer
138,131
Practice 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 138,121 in words?
138,121 is written "one hundred thirty-eight thousand one hundred twenty-one".
Is 138,121 a prime number?
No. 138,121 is a composite number, because it has more than two factors.
What are the factors of 138,121?
The factors of 138,121 are 1, 37, 3,733 and 138,121.