42102731056 has 20 divisors (see below), whose sum is σ = 83113175952. Its totient is φ = 20654169536.

The previous prime is 42102730991. The next prime is 42102731107. The reversal of 42102731056 is 65013720124.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24823876 + ... + 24825571.

Almost surely, 2^42102731056 is an apocalyptic number.

It is an amenable number.

42102731056 is a deficient number, since it is larger than the sum of its proper divisors (41010444896).

42102731056 is a wasteful number, since it uses less digits than its factorization.

42102731056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49649508 (or 49649502 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The spelling of 42102731056 in words is "forty-two billion, one hundred two million, seven hundred thirty-one thousand, fifty-six".