42173556198 has 16 divisors (see below), whose sum is σ = 85294833840. Its totient is φ = 13899898496.

The previous prime is 42173556151. The next prime is 42173556199. The reversal of 42173556198 is 89165537124.

It is a self number, because there is not a number n which added to its sum of digits gives 42173556198.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42173556199) 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, 39487815 + ... + 39488882.

It is an arithmetic number, because the mean of its divisors is an integer number (5330927115).

Almost surely, 2^42173556198 is an apocalyptic number.

42173556198 is an abundant number, since it is smaller than the sum of its proper divisors (43121277642).

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

42173556198 is a wasteful number, since it uses less digits than its factorization.

42173556198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78976791.

The product of its digits is 1814400, while the sum is 51.

The spelling of 42173556198 in words is "forty-two billion, one hundred seventy-three million, five hundred fifty-six thousand, one hundred ninety-eight".