1012904 has 8 divisors (see below), whose sum is σ = 1899210. Its totient is φ = 506448.

The previous prime is 1012903. The next prime is 1012919. The reversal of 1012904 is 4092101.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 996004 + 16900 = 998^2 + 130^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1012903) 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 as a sum of consecutive naturals, namely, 63299 + ... + 63314.

2^1012904 is an apocalyptic number.

It is an amenable number.

1012904 is a deficient number, since it is larger than the sum of its proper divisors (886306).

1012904 is a wasteful number, since it uses less digits than its factorization.

1012904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126619 (or 126615 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 1012904 is about 1006.4313190675. The cubic root of 1012904 is about 100.4282963370.

The spelling of 1012904 in words is "one million, twelve thousand, nine hundred four".