1,123 in words
1,123
one thousand one hundred twenty-three
1,123 is written one thousand one hundred twenty-three.
Ways to write it
- As an ordinal
- one thousand one hundred twenty-third
- Roman numeral
- MCXXIII
- Expanded form
- 1,000 + 100 + 20 + 3
Place value
| Place | Digit | Value |
|---|---|---|
| thousands | 1 | 1,000 |
| hundreds | 1 | 100 |
| tens | 2 | 20 |
| ones | 3 | 3 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Prime
- Factors
- 1 and 1,123 (2 factors)
- First 10 multiples
- 1,123, 2,246, 3,369, 4,492, 5,615, 6,738, 7,861, 8,984, 10,107, 11,230
- Square
- 1,123 × 1,123 = 1,261,129
- Square root
- ≈ 33.51
- Sum of the digits
- 1 + 1 + 2 + 3 = 7
- Rounded to the nearest 10
- 1,120
- Rounded to the nearest 100
- 1,100
- Rounded to the nearest 1000
- 1,000
- Number before
- 1,122
- Number after
- 1,124
- In binary
10001100011
Quick check
What number comes just after 1,123?
Show the answer
1,124
Is 1,123 even or odd?
Show the answer
Odd
What is 1,123 + 10?
Show the answer
1,133
Practice with a game
Factors, Multiples & Primes
Multiples, factors, prime numbers, square numbers and prime factors.
Roman Numerals
Read and write Roman numerals from I to 3,999.Frequently asked questions
How do you write 1,123 in words?
1,123 is written "one thousand one hundred twenty-three".
Is 1,123 a prime number?
Yes. 1,123 is a prime number: its only factors are 1 and 1,123.
What are the factors of 1,123?
The factors of 1,123 are 1 and 1,123.
How do you write 1,123 in Roman numerals?
1,123 in Roman numerals is MCXXIII.