8142904 has 32 divisors (see below), whose sum is σ = 19036800. Its totient is φ = 3172320.

The previous prime is 8142857. The next prime is 8142907. The reversal of 8142904 is 4092418.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8142907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5994 + ... + 7225.

It is an arithmetic number, because the mean of its divisors is an integer number (594900).

Almost surely, 2^8142904 is an apocalyptic number.

It is an amenable number.

8142904 is an abundant number, since it is smaller than the sum of its proper divisors (10893896).

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

8142904 is a wasteful number, since it uses less digits than its factorization.

8142904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13243 (or 13239 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 8142904 is about 2853.5774038915. The cubic root of 8142904 is about 201.1838453909.

The spelling of 8142904 in words is "eight million, one hundred forty-two thousand, nine hundred four".