64042904 has 16 divisors (see below), whose sum is σ = 124221600. Its totient is φ = 30917152.

The previous prime is 64042877. The next prime is 64042949. The reversal of 64042904 is 40924046.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a pancake number, because a pancake can be divided into 64042904 parts by 11317 straight cuts.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137792 + ... + 138255.

It is an arithmetic number, because the mean of its divisors is an integer number (7763850).

Almost surely, 2^64042904 is an apocalyptic number.

It is an amenable number.

64042904 is a deficient number, since it is larger than the sum of its proper divisors (60178696).

64042904 is a wasteful number, since it uses less digits than its factorization.

64042904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276082 (or 276078 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 64042904 is about 8002.6810507479. The cubic root of 64042904 is about 400.0893633673.

It can be divided in two parts, 64042 and 904, that added together give a palindrome (64946).

The spelling of 64042904 in words is "sixty-four million, forty-two thousand, nine hundred four".