129924051 has 4 divisors (see below), whose sum is σ = 173232072. Its totient is φ = 86616032.

The previous prime is 129924049. The next prime is 129924127. The reversal of 129924051 is 150429921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 150429921 = 3 ⋅50143307.

It is a cyclic number.

It is not a de Polignac number, because 129924051 - 2¹ = 129924049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (129923051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21654006 + ... + 21654011.

It is an arithmetic number, because the mean of its divisors is an integer number (43308018).

Almost surely, 2^129924051 is an apocalyptic number.

129924051 is a deficient number, since it is larger than the sum of its proper divisors (43308021).

129924051 is an equidigital number, since it uses as much as digits as its factorization.

129924051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43308020.

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 129924051 is about 11398.4231804228. The cubic root of 129924051 is about 506.4810308416.

The spelling of 129924051 in words is "one hundred twenty-nine million, nine hundred twenty-four thousand, fifty-one".