129142239425 has 12 divisors (see below), whose sum is σ = 167098828800. Its totient is φ = 98821887120.

The previous prime is 129142239377. The next prime is 129142239461. The reversal of 129142239425 is 524932241921.

It is not a de Polignac number, because 129142239425 - 2⁶ = 129142239361 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 112297025 + ... + 112298174.

It is an arithmetic number, because the mean of its divisors is an integer number (13924902400).

Almost surely, 2^129142239425 is an apocalyptic number.

It is an amenable number.

129142239425 is a deficient number, since it is larger than the sum of its proper divisors (37956589375).

129142239425 is a wasteful number, since it uses less digits than its factorization.

129142239425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224595232 (or 224595227 counting only the distinct ones).

The product of its digits is 311040, while the sum is 44.

The spelling of 129142239425 in words is "one hundred twenty-nine billion, one hundred forty-two million, two hundred thirty-nine thousand, four hundred twenty-five".