42185066 has 16 divisors (see below), whose sum is σ = 78891840. Its totient is φ = 16435680.

The previous prime is 42185063. The next prime is 42185081. The reversal of 42185066 is 66058124.

It is not an unprimeable number, because it can be changed into a prime (42185063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136811 + ... + 137118.

It is an arithmetic number, because the mean of its divisors is an integer number (4930740).

Almost surely, 2^42185066 is an apocalyptic number.

42185066 is a deficient number, since it is larger than the sum of its proper divisors (36706774).

42185066 is a wasteful number, since it uses less digits than its factorization.

42185066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273949.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 42185066 is about 6495.0031562733. The cubic root of 42185066 is about 348.1124675020.

The spelling of 42185066 in words is "forty-two million, one hundred eighty-five thousand, sixty-six".