129052012424 has 8 divisors (see below), whose sum is σ = 241972523310. Its totient is φ = 64526006208.

The previous prime is 129052012417. The next prime is 129052012429. The reversal of 129052012424 is 424210250921.

It can be written as a sum of positive squares in only one way, i.e., 99930589924 + 29121422500 = 316118^2 + 170650^2 .

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

It is not an unprimeable number, because it can be changed into a prime (129052012429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8065750769 + ... + 8065750784.

Almost surely, 2^129052012424 is an apocalyptic number.

It is an amenable number.

129052012424 is a deficient number, since it is larger than the sum of its proper divisors (112920510886).

129052012424 is a wasteful number, since it uses less digits than its factorization.

129052012424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16131501559 (or 16131501555 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The spelling of 129052012424 in words is "one hundred twenty-nine billion, fifty-two million, twelve thousand, four hundred twenty-four".