129393742392 has 48 divisors (see below), whose sum is σ = 368885673000. Its totient is φ = 40861181376.

The previous prime is 129393742381. The next prime is 129393742409. The reversal of 129393742392 is 293247393921.

129393742392 is a `hidden beast` number, since 1 + 2 + 9 + 39 + 374 + 239 + 2 = 666.

It is a congruent number.

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, 47291667 + ... + 47294402.

Almost surely, 2^129393742392 is an apocalyptic number.

129393742392 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

129393742392 is an abundant number, since it is smaller than the sum of its proper divisors (239491930608).

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

129393742392 is a wasteful number, since it uses less digits than its factorization.

129393742392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94586100 (or 94586093 counting only the distinct ones).

The product of its digits is 4408992, while the sum is 54.

The spelling of 129393742392 in words is "one hundred twenty-nine billion, three hundred ninety-three million, seven hundred forty-two thousand, three hundred ninety-two".