The number 129 is an integer that follows 128 and precedes 130. It is an odd number and can be expressed as the sum of 64 and 65. In mathematics, 129 is classified as a composite number because it has divisors other than 1 and itself. In terms of its properties, 129 can be factored into 3 and 43, making it a product of two prime numbers. This number is also significant in various contexts, such as in numerology and mathematics, where it can represent different concepts or values depending on the application.