129376549542 has 32 divisors (see below), whose sum is σ = 267648620544. Its totient is φ = 41648644800.

The previous prime is 129376549531. The next prime is 129376549553. The reversal of 129376549542 is 245945673921.

It is an interprime number because it is at equal distance from previous prime (129376549531) and next prime (129376549553).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 623559 + ... + 804722.

It is an arithmetic number, because the mean of its divisors is an integer number (8364019392).

Almost surely, 2^129376549542 is an apocalyptic number.

129376549542 is an abundant number, since it is smaller than the sum of its proper divisors (138272071002).

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

129376549542 is a wasteful number, since it uses less digits than its factorization.

129376549542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1428804.

The product of its digits is 16329600, while the sum is 57.

The spelling of 129376549542 in words is "one hundred twenty-nine billion, three hundred seventy-six million, five hundred forty-nine thousand, five hundred forty-two".