129424959 has 24 divisors (see below), whose sum is σ = 195791232. Its totient is φ = 85429080.

The previous prime is 129424949. The next prime is 129425003. The reversal of 129424959 is 959424921.

It is not a de Polignac number, because 129424959 - 2¹⁵ = 129392191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129424909) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22444 + ... + 27614.

It is an arithmetic number, because the mean of its divisors is an integer number (8157968).

Almost surely, 2^129424959 is an apocalyptic number.

129424959 is a deficient number, since it is larger than the sum of its proper divisors (66366273).

129424959 is an equidigital number, since it uses as much as digits as its factorization.

129424959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5289 (or 5277 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 129424959 is about 11376.5090867102. The cubic root of 129424959 is about 505.8316642833.

The spelling of 129424959 in words is "one hundred twenty-nine million, four hundred twenty-four thousand, nine hundred fifty-nine".