42156623244 has 24 divisors (see below), whose sum is σ = 99833597248. Its totient is φ = 13842473040.

The previous prime is 42156623233. The next prime is 42156623303. The reversal of 42156623244 is 44232665124.

It is a happy number.

It is a super-2 number, since 2×42156623244² (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 7 ways as a sum of consecutive naturals, for example, 26216002 + ... + 26217609.

Almost surely, 2^42156623244 is an apocalyptic number.

It is an amenable number.

42156623244 is an abundant number, since it is smaller than the sum of its proper divisors (57676974004).

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

42156623244 is a wasteful number, since it uses less digits than its factorization.

42156623244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52433685 (or 52433683 counting only the distinct ones).

The product of its digits is 276480, while the sum is 39.

The spelling of 42156623244 in words is "forty-two billion, one hundred fifty-six million, six hundred twenty-three thousand, two hundred forty-four".