42120791696 has 20 divisors (see below), whose sum is σ = 84241584384. Its totient is φ = 20381028000.

The previous prime is 42120791689. The next prime is 42120791723. The reversal of 42120791696 is 69619702124.

42120791696 is an admirable number.

It is a super-2 number, since 2×42120791696² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42120791696.

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, 42459980 + ... + 42460971.

Almost surely, 2^42120791696 is an apocalyptic number.

It is an amenable number.

42120791696 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

42120791696 is a wasteful number, since it uses less digits than its factorization.

42120791696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84920990 (or 84920984 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 47.

The spelling of 42120791696 in words is "forty-two billion, one hundred twenty million, seven hundred ninety-one thousand, six hundred ninety-six".