42421166 has 16 divisors (see below), whose sum is σ = 66747456. Its totient is φ = 20196576.

The previous prime is 42421133. The next prime is 42421187. The reversal of 42421166 is 66112424.

It is a congruent number.

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, 2621 + ... + 9576.

It is an arithmetic number, because the mean of its divisors is an integer number (4171716).

Almost surely, 2^42421166 is an apocalyptic number.

42421166 is a deficient number, since it is larger than the sum of its proper divisors (24326290).

42421166 is a wasteful number, since it uses less digits than its factorization.

42421166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12283.

The product of its digits is 2304, while the sum is 26.

The square root of 42421166 is about 6513.1533069628. The cubic root of 42421166 is about 348.7606945072.

The spelling of 42421166 in words is "forty-two million, four hundred twenty-one thousand, one hundred sixty-six".