42188866 has 16 divisors (see below), whose sum is σ = 67184640. Its totient is φ = 19800640.

The previous prime is 42188821. The next prime is 42188879. The reversal of 42188866 is 66888124.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13215 + ... + 16093.

It is an arithmetic number, because the mean of its divisors is an integer number (4199040).

Almost surely, 2^42188866 is an apocalyptic number.

42188866 is a deficient number, since it is larger than the sum of its proper divisors (24995774).

42188866 is a wasteful number, since it uses less digits than its factorization.

42188866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3329.

The product of its digits is 147456, while the sum is 43.

The square root of 42188866 is about 6495.2956822611. The cubic root of 42188866 is about 348.1229197606.

The spelling of 42188866 in words is "forty-two million, one hundred eighty-eight thousand, eight hundred sixty-six".