1045812 has 12 divisors (see below), whose sum is σ = 2440256. Its totient is φ = 348600.

The previous prime is 1045801. The next prime is 1045819. The reversal of 1045812 is 2185401.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1045819) 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, 43564 + ... + 43587.

2^1045812 is an apocalyptic number.

1045812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1045812 is an abundant number, since it is smaller than the sum of its proper divisors (1394444).

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

1045812 is a wasteful number, since it uses less digits than its factorization.

1045812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87158 (or 87156 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 1045812 is about 1022.6495000732. The cubic root of 1045812 is about 101.5043233051.

The spelling of 1045812 in words is "one million, forty-five thousand, eight hundred twelve".