129561024 has 56 divisors (see below), whose sum is σ = 357713280. Its totient is φ = 41307904.

The previous prime is 129561023. The next prime is 129561031. The reversal of 129561024 is 420165921.

It is a junction number, because it is equal to n+sod(n) for n = 129560982 and 129561000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129561023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10254 + ... + 19085.

Almost surely, 2^129561024 is an apocalyptic number.

It is an amenable number.

129561024 is an abundant number, since it is smaller than the sum of its proper divisors (228152256).

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

129561024 is a wasteful number, since it uses less digits than its factorization.

129561024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29377 (or 29367 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 129561024 is about 11382.4876015746. The cubic root of 129561024 is about 506.0088631817.

The spelling of 129561024 in words is "one hundred twenty-nine million, five hundred sixty-one thousand, twenty-four".