129041512 has 8 divisors (see below), whose sum is σ = 241952850. Its totient is φ = 64520752.

The previous prime is 129041489. The next prime is 129041519. The reversal of 129041512 is 215140921.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 118504996 + 10536516 = 10886^2 + 3246^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×129041512² = 33303423638492288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (129041519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8065087 + ... + 8065102.

Almost surely, 2^129041512 is an apocalyptic number.

It is an amenable number.

129041512 is a deficient number, since it is larger than the sum of its proper divisors (112911338).

129041512 is a wasteful number, since it uses less digits than its factorization.

129041512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16130195 (or 16130191 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 129041512 is about 11359.6440085066. The cubic root of 129041512 is about 505.3316280732.

The spelling of 129041512 in words is "one hundred twenty-nine million, forty-one thousand, five hundred twelve".