"One Hundred Twenty-Three" is a numerical value that comes after one hundred twenty-two and before one hundred twenty-four. It is represented in digits as 123 and can be used in various contexts, such as counting, measuring, or labeling items. In mathematics, the number 123 is an odd number and can be expressed in different forms, such as a sum of smaller numbers. For example, it can be broken down into 100 + 20 + 3. Additionally, in Roman numerals, it is written as CXXIII.