129031068 has 24 divisors (see below), whose sum is σ = 302279040. Its totient is φ = 42838000.

The previous prime is 129031061. The next prime is 129031073. The reversal of 129031068 is 860130921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129031061) 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, 18408 + ... + 24431.

It is an arithmetic number, because the mean of its divisors is an integer number (12594960).

Almost surely, 2^129031068 is an apocalyptic number.

It is an amenable number.

129031068 is an abundant number, since it is smaller than the sum of its proper divisors (173247972).

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

129031068 is a wasteful number, since it uses less digits than its factorization.

129031068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43097 (or 43095 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 129031068 is about 11359.1843017005. The cubic root of 129031068 is about 505.3179946673.

Adding to 129031068 its reverse (860130921), we get a palindrome (989161989).

The spelling of 129031068 in words is "one hundred twenty-nine million, thirty-one thousand, sixty-eight".