1285004 has 12 divisors (see below), whose sum is σ = 2570064. Its totient is φ = 550704.

The previous prime is 1284991. The next prime is 1285021. The reversal of 1285004 is 4005821.

1285004 is an admirable number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 22919 + ... + 22974.

It is an arithmetic number, because the mean of its divisors is an integer number (214172).

2^1285004 is an apocalyptic number.

1285004 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1285004 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1285004 is a wasteful number, since it uses less digits than its factorization.

1285004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45904 (or 45902 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 1285004 is about 1133.5801691985. The cubic root of 1285004 is about 108.7180097036.

The spelling of 1285004 in words is "one million, two hundred eighty-five thousand, four".