42156056634 has 32 divisors (see below), whose sum is σ = 87483552576. Its totient is φ = 13531276800.

The previous prime is 42156056627. The next prime is 42156056647. The reversal of 42156056634 is 43665065124.

It is a super-2 number, since 2×42156056634² (a number of 22 digits) contains 22 as substring.

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, 957292 + ... + 1000359.

It is an arithmetic number, because the mean of its divisors is an integer number (2733861018).

Almost surely, 2^42156056634 is an apocalyptic number.

42156056634 is an abundant number, since it is smaller than the sum of its proper divisors (45327495942).

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

42156056634 is a wasteful number, since it uses less digits than its factorization.

42156056634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1957790.

The product of its (nonzero) digits is 518400, while the sum is 42.

The spelling of 42156056634 in words is "forty-two billion, one hundred fifty-six million, fifty-six thousand, six hundred thirty-four".