1279312 has 20 divisors (see below), whose sum is σ = 2546836. Its totient is φ = 622080.

The previous prime is 1279309. The next prime is 1279319. The reversal of 1279312 is 2139721.

It can be written as a sum of positive squares in 2 ways, for example, as 992016 + 287296 = 996^2 + 536^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1279319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 489 + ... + 1672.

2^1279312 is an apocalyptic number.

It is an amenable number.

1279312 is a deficient number, since it is larger than the sum of its proper divisors (1267524).

1279312 is a wasteful number, since it uses less digits than its factorization.

1279312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2206 (or 2200 counting only the distinct ones).

The product of its digits is 756, while the sum is 25.

The square root of 1279312 is about 1131.0667531141. The cubic root of 1279312 is about 108.5572478511.

The spelling of 1279312 in words is "one million, two hundred seventy-nine thousand, three hundred twelve".