129235012 has 12 divisors (see below), whose sum is σ = 226618000. Its totient is φ = 64487016.

The previous prime is 129234983. The next prime is 129235033. The reversal of 129235012 is 210532921.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30378 + ... + 34369.

Almost surely, 2^129235012 is an apocalyptic number.

It is an amenable number.

129235012 is a deficient number, since it is larger than the sum of its proper divisors (97382988).

129235012 is a wasteful number, since it uses less digits than its factorization.

129235012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65250 (or 65248 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 129235012 is about 11368.1578103051. The cubic root of 129235012 is about 505.5840864594.

Adding to 129235012 its reverse (210532921), we get a palindrome (339767933).

The spelling of 129235012 in words is "one hundred twenty-nine million, two hundred thirty-five thousand, twelve".