42139160728 has 64 divisors (see below), whose sum is σ = 94388616000. Its totient is φ = 17619114240.

The previous prime is 42139160719. The next prime is 42139160741. The reversal of 42139160728 is 82706193124.

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, 74775 + ... + 299782.

It is an arithmetic number, because the mean of its divisors is an integer number (1474822125).

Almost surely, 2^42139160728 is an apocalyptic number.

It is an amenable number.

42139160728 is an abundant number, since it is smaller than the sum of its proper divisors (52249455272).

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

42139160728 is a wasteful number, since it uses less digits than its factorization.

42139160728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374625 (or 374607 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 43.

The spelling of 42139160728 in words is "forty-two billion, one hundred thirty-nine million, one hundred sixty thousand, seven hundred twenty-eight".