129024564 has 12 divisors (see below), whose sum is σ = 301057344. Its totient is φ = 43008184.

The previous prime is 129024551. The next prime is 129024569. The reversal of 129024564 is 465420921.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129024569) 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, 5376012 + ... + 5376035.

It is an arithmetic number, because the mean of its divisors is an integer number (25088112).

Almost surely, 2^129024564 is an apocalyptic number.

It is an amenable number.

129024564 is an abundant number, since it is smaller than the sum of its proper divisors (172032780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129024564 is a wasteful number, since it uses less digits than its factorization.

129024564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10752054 (or 10752052 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 129024564 is about 11358.8980099304. The cubic root of 129024564 is about 505.3095040934.

The spelling of 129024564 in words is "one hundred twenty-nine million, twenty-four thousand, five hundred sixty-four".