42806806 has 16 divisors (see below), whose sum is σ = 73879200. Its totient is φ = 18221760.

The previous prime is 42806789. The next prime is 42806831. The reversal of 42806806 is 60860824.

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, 8175 + ... + 12346.

It is an arithmetic number, because the mean of its divisors is an integer number (4617450).

Almost surely, 2^42806806 is an apocalyptic number.

42806806 is a deficient number, since it is larger than the sum of its proper divisors (31072394).

42806806 is a wasteful number, since it uses less digits than its factorization.

42806806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20679.

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 42806806 is about 6542.6910365690. The cubic root of 42806806 is about 349.8143396276.

The spelling of 42806806 in words is "forty-two million, eight hundred six thousand, eight hundred six".