42173886 has 16 divisors (see below), whose sum is σ = 84416400. Its totient is φ = 14046528.

The previous prime is 42173861. The next prime is 42173893. The reversal of 42173886 is 68837124.

42173886 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8770 + ... + 12698.

It is an arithmetic number, because the mean of its divisors is an integer number (5276025).

Almost surely, 2^42173886 is an apocalyptic number.

42173886 is an abundant number, since it is smaller than the sum of its proper divisors (42242514).

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

42173886 is a wasteful number, since it uses less digits than its factorization.

42173886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5723.

The product of its digits is 64512, while the sum is 39.

The square root of 42173886 is about 6494.1424376125. The cubic root of 42173886 is about 348.0817122165.

The spelling of 42173886 in words is "forty-two million, one hundred seventy-three thousand, eight hundred eighty-six".