42718664 has 16 divisors (see below), whose sum is σ = 81294000. Its totient is φ = 21040272.

The previous prime is 42718639. The next prime is 42718667. The reversal of 42718664 is 46681724.

42718664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (42718667) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 39314 + ... + 40385.

It is an arithmetic number, because the mean of its divisors is an integer number (5080875).

Almost surely, 2^42718664 is an apocalyptic number.

It is an amenable number.

42718664 is a deficient number, since it is larger than the sum of its proper divisors (38575336).

42718664 is a wasteful number, since it uses less digits than its factorization.

42718664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79772 (or 79768 counting only the distinct ones).

The product of its digits is 64512, while the sum is 38.

The square root of 42718664 is about 6535.9516522080. The cubic root of 42718664 is about 349.5740778152.

It can be divided in two parts, 427 and 18664, that added together give a palindrome (19091).

The spelling of 42718664 in words is "forty-two million, seven hundred eighteen thousand, six hundred sixty-four".