42064686 has 24 divisors (see below), whose sum is σ = 91862784. Its totient is φ = 13910400.

The previous prime is 42064679. The next prime is 42064697. The reversal of 42064686 is 68646024.

It is a happy number.

42064686 is a `hidden beast` number, since 4 + 2 + 0 + 646 + 8 + 6 = 666.

42064686 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 42064686.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6915 + ... + 11486.

It is an arithmetic number, because the mean of its divisors is an integer number (3827616).

Almost surely, 2^42064686 is an apocalyptic number.

42064686 is an abundant number, since it is smaller than the sum of its proper divisors (49798098).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42064686 is a wasteful number, since it uses less digits than its factorization.

42064686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18536 (or 18533 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The square root of 42064686 is about 6485.7294115620. The cubic root of 42064686 is about 347.7810255397.

The spelling of 42064686 in words is "forty-two million, sixty-four thousand, six hundred eighty-six".