42422340172 has 12 divisors (see below), whose sum is σ = 74424233016. Its totient is φ = 21158273600.

The previous prime is 42422340167. The next prime is 42422340187. The reversal of 42422340172 is 27104322424.

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, 13222318 + ... + 13225525.

It is an arithmetic number, because the mean of its divisors is an integer number (6202019418).

Almost surely, 2^42422340172 is an apocalyptic number.

It is an amenable number.

42422340172 is a deficient number, since it is larger than the sum of its proper divisors (32001892844).

42422340172 is a wasteful number, since it uses less digits than its factorization.

42422340172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26448248 (or 26448246 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 31.

Adding to 42422340172 its reverse (27104322424), we get a palindrome (69526662596).

The spelling of 42422340172 in words is "forty-two billion, four hundred twenty-two million, three hundred forty thousand, one hundred seventy-two".