CXLV

CXLV is the Roman numeral that represents the integer 145. It is formed by combining C (100), XL (40), and V (5), for a total of 145. The XL portion illustrates the subtractive principle used in Roman numerals, where a smaller value placed before a larger one subtracts from the total.

In use, CXLV can denote a year, a position in a sequence, or a catalog or edition number. For example, 145 CE would place it in the mid-2nd century during the Roman Empire. In modern contexts, the string CXLV may also appear as a model number, inventory code, or ordinal designation in lists and publications, especially when Roman numerals are chosen for stylistic or traditional reasons.

Overall, CXLV is just one of the standard forms of Roman numerals used to express the number 145 and to indicate positions or dates in systems that employ Roman numeric notation. See also Roman numerals for a broader understanding of their rules and variations.