129088068 has 12 divisors (see below), whose sum is σ = 301205520. Its totient is φ = 43029352.

The previous prime is 129088067. The next prime is 129088111. The reversal of 129088068 is 860880921.

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 (42) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (129088067) 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, 5378658 + ... + 5378681.

It is an arithmetic number, because the mean of its divisors is an integer number (25100460).

Almost surely, 2^129088068 is an apocalyptic number.

It is an amenable number.

129088068 is an abundant number, since it is smaller than the sum of its proper divisors (172117452).

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

129088068 is a wasteful number, since it uses less digits than its factorization.

129088068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10757346 (or 10757344 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 42.

The square root of 129088068 is about 11361.6930076464. The cubic root of 129088068 is about 505.3923924742.

The spelling of 129088068 in words is "one hundred twenty-nine million, eighty-eight thousand, sixty-eight".