138 in Roman Numerals
138
CXXXVIII
one hundred thirty-eight
How CXXXVIII is formed
| Place | Value | Symbols |
|---|---|---|
| Hundreds | 100 | C |
| Tens | 30 | XXX |
| Units | 8 | VIII |
| Total | 138 | CXXXVIII |
CXXXVIII is written one place at a time, from the largest to the smallest: C (100) + XXX (30) + VIII (8) = 138.
Common mistakes
Wrong: CXXXIIX
Why isn't 138 written as CXXXIIX?
Only one smaller symbol can stand before a larger one, so IIX doesn't work. 8 is VIII (5 + 3), so 138 is CXXXVIII.
Numbers near 138
Properties of 138
- Prime factors
- 2 × 3 × 23
- Divisors
- 1, 2, 3, 6, 23, 46, 69, 138
- Even or odd
- Even
- Prime number
- No
- Letters in CXXXVIII
- 8
138,000 in Roman numerals
With a bar over it (vinculum), C̅X̅X̅X̅V̅I̅I̅I̅ means 138 × 1,000 = 138,000. How Roman numerals work