42117922 has 72 divisors (see below), whose sum is σ = 84728448. Its totient is φ = 15362160.

The previous prime is 42117913. The next prime is 42117953. The reversal of 42117922 is 22971124.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 896103 + ... + 896149.

It is an arithmetic number, because the mean of its divisors is an integer number (1176784).

Almost surely, 2^42117922 is an apocalyptic number.

42117922 is an abundant number, since it is smaller than the sum of its proper divisors (42610526).

42117922 is a wasteful number, since it uses less digits than its factorization.

42117922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124 (or 90 counting only the distinct ones).

The product of its digits is 2016, while the sum is 28.

The square root of 42117922 is about 6489.8322012206. The cubic root of 42117922 is about 347.9276779731.

It can be divided in two parts, 421179 and 22, that added together give a square (421201 = 649²).

The spelling of 42117922 in words is "forty-two million, one hundred seventeen thousand, nine hundred twenty-two".