1275992 has 8 divisors (see below), whose sum is σ = 2392500. Its totient is φ = 637992.

The previous prime is 1275979. The next prime is 1276001. The reversal of 1275992 is 2995721.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79742 + ... + 79757.

2^1275992 is an apocalyptic number.

It is an amenable number.

1275992 is a deficient number, since it is larger than the sum of its proper divisors (1116508).

1275992 is a wasteful number, since it uses less digits than its factorization.

1275992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159505 (or 159501 counting only the distinct ones).

The product of its digits is 11340, while the sum is 35.

The square root of 1275992 is about 1129.5981586387. The cubic root of 1275992 is about 108.4632592371.

The spelling of 1275992 in words is "one million, two hundred seventy-five thousand, nine hundred ninety-two".