129050405 has 16 divisors (see below), whose sum is σ = 171806400. Its totient is φ = 92261760.

The previous prime is 129050399. The next prime is 129050429. The reversal of 129050405 is 504050921.

It is not a de Polignac number, because 129050405 - 2⁸ = 129050149 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16640 + ... + 23129.

It is an arithmetic number, because the mean of its divisors is an integer number (10737900).

Almost surely, 2^129050405 is an apocalyptic number.

It is an amenable number.

129050405 is a deficient number, since it is larger than the sum of its proper divisors (42755995).

129050405 is a wasteful number, since it uses less digits than its factorization.

129050405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39844.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 129050405 is about 11360.0354312828. The cubic root of 129050405 is about 505.3432362523.

The spelling of 129050405 in words is "one hundred twenty-nine million, fifty thousand, four hundred five".