42365988 has 144 divisors (see below), whose sum is σ = 129292800. Its totient is φ = 11684736.

The previous prime is 42365969. The next prime is 42365993. The reversal of 42365988 is 88956324.

It is a super-2 number, since 2×42365988² = 3589753878432288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 580320 + ... + 580392.

Almost surely, 2^42365988 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42365988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64646400).

42365988 is an abundant number, since it is smaller than the sum of its proper divisors (86926812).

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

42365988 is a wasteful number, since it uses less digits than its factorization.

42365988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151 (or 132 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 42365988 is about 6508.9160387886. The cubic root of 42365988 is about 348.6094157228.

The spelling of 42365988 in words is "forty-two million, three hundred sixty-five thousand, nine hundred eighty-eight".