129588242 has 12 divisors (see below), whose sum is σ = 226118430. Its totient is φ = 55537776.

The previous prime is 129588143. The next prime is 129588257. The reversal of 129588242 is 242885921.

It is a happy number.

129588242 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 124970041 + 4618201 = 11179^2 + 2149^2 .

It is a super-2 number, since 2×129588242² = 33586224929301128, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 129588242.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 661067 + ... + 661262.

Almost surely, 2^129588242 is an apocalyptic number.

129588242 is a deficient number, since it is larger than the sum of its proper divisors (96530188).

129588242 is a wasteful number, since it uses less digits than its factorization.

129588242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1322345 (or 1322338 counting only the distinct ones).

The product of its digits is 92160, while the sum is 41.

The square root of 129588242 is about 11383.6831473825. The cubic root of 129588242 is about 506.0442945804.

The spelling of 129588242 in words is "one hundred twenty-nine million, five hundred eighty-eight thousand, two hundred forty-two".