42188804 has 18 divisors (see below), whose sum is σ = 85884750. Its totient is φ = 18080832.

The previous prime is 42188789. The next prime is 42188807. The reversal of 42188804 is 40888124.

It can be written as a sum of positive squares in only one way, i.e., 40934404 + 1254400 = 6398^2 + 1120^2 .

It is not an unprimeable number, because it can be changed into a prime (42188807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 107429 + ... + 107820.

It is an arithmetic number, because the mean of its divisors is an integer number (4771375).

Almost surely, 2^42188804 is an apocalyptic number.

It is an amenable number.

42188804 is an abundant number, since it is smaller than the sum of its proper divisors (43695946).

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

42188804 is a wasteful number, since it uses less digits than its factorization.

42188804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215267 (or 215258 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 35.

The square root of 42188804 is about 6495.2909095744. The cubic root of 42188804 is about 348.1227492288.

The spelling of 42188804 in words is "forty-two million, one hundred eighty-eight thousand, eight hundred four".