1297812 has 36 divisors (see below), whose sum is σ = 3151680. Its totient is φ = 415584.

The previous prime is 1297799. The next prime is 1297841. The reversal of 1297812 is 2187921.

It is a self number, because there is not a number n which added to its sum of digits gives 1297812.

It is a congruent 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 11 ways as a sum of consecutive naturals, for example, 16389 + ... + 16467.

2^1297812 is an apocalyptic number.

1297812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1297812 is an abundant number, since it is smaller than the sum of its proper divisors (1853868).

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

1297812 is a wasteful number, since it uses less digits than its factorization.

1297812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160 (or 121 counting only the distinct ones).

The product of its digits is 2016, while the sum is 30.

The square root of 1297812 is about 1139.2155195572. The cubic root of 1297812 is about 109.0780239832.

The spelling of 1297812 in words is "one million, two hundred ninety-seven thousand, eight hundred twelve".