42066404 has 12 divisors (see below), whose sum is σ = 74146800. Its totient is φ = 20881608.

The previous prime is 42066371. The next prime is 42066407. The reversal of 42066404 is 40466024.

It is not an unprimeable number, because it can be changed into a prime (42066407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37274 + ... + 38385.

It is an arithmetic number, because the mean of its divisors is an integer number (6178900).

Almost surely, 2^42066404 is an apocalyptic number.

It is an amenable number.

42066404 is a deficient number, since it is larger than the sum of its proper divisors (32080396).

42066404 is a wasteful number, since it uses less digits than its factorization.

42066404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75802 (or 75800 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 42066404 is about 6485.8618548347. The cubic root of 42066404 is about 347.7857601499.

The spelling of 42066404 in words is "forty-two million, sixty-six thousand, four hundred four".