42172025338 has 8 divisors (see below), whose sum is σ = 64202188032. Its totient is φ = 20771295996.

The previous prime is 42172025333. The next prime is 42172025347. The reversal of 42172025338 is 83352027124.

42172025338 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×42172025338² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42172025297 and 42172025306.

It is not an unprimeable number, because it can be changed into a prime (42172025333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157358170 + ... + 157358437.

It is an arithmetic number, because the mean of its divisors is an integer number (8025273504).

Almost surely, 2^42172025338 is an apocalyptic number.

42172025338 is a deficient number, since it is larger than the sum of its proper divisors (22030162694).

42172025338 is a wasteful number, since it uses less digits than its factorization.

42172025338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314716676.

The product of its (nonzero) digits is 80640, while the sum is 37.

The spelling of 42172025338 in words is "forty-two billion, one hundred seventy-two million, twenty-five thousand, three hundred thirty-eight".