42190884 has 18 divisors (see below), whose sum is σ = 106649270. Its totient is φ = 14063616.

The previous prime is 42190873. The next prime is 42190891. The reversal of 42190884 is 48809124.

It can be written as a sum of positive squares in only one way, i.e., 31809600 + 10381284 = 5640^2 + 3222^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1171969 = 42190884 / (4 + 2 + 1 + 9 + 0 + 8 + 8 + 4).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 585949 + ... + 586020.

Almost surely, 2^42190884 is an apocalyptic number.

It is an amenable number.

42190884 is an abundant number, since it is smaller than the sum of its proper divisors (64458386).

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

42190884 is a wasteful number, since it uses less digits than its factorization.

42190884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1171979 (or 1171974 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 42190884 is about 6495.4510236011. The cubic root of 42190884 is about 348.1284702049.

The spelling of 42190884 in words is "forty-two million, one hundred ninety thousand, eight hundred eighty-four".