42500972168 has 32 divisors (see below), whose sum is σ = 83938324800. Its totient is φ = 20118881088.

The previous prime is 42500972161. The next prime is 42500972177. The reversal of 42500972168 is 86127900524.

It is a happy number.

It is a super-2 number, since 2×42500972168² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42500972161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143930 + ... + 325142.

It is an arithmetic number, because the mean of its divisors is an integer number (2623072650).

Almost surely, 2^42500972168 is an apocalyptic number.

It is an amenable number.

42500972168 is a deficient number, since it is larger than the sum of its proper divisors (41437352632).

42500972168 is a wasteful number, since it uses less digits than its factorization.

42500972168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182781 (or 182777 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 44.

The spelling of 42500972168 in words is "forty-two billion, five hundred million, nine hundred seventy-two thousand, one hundred sixty-eight".