1291592 has 16 divisors (see below), whose sum is σ = 2564460. Its totient is φ = 607744.

The previous prime is 1291579. The next prime is 1291603. The reversal of 1291592 is 2951921.

It can be written as a sum of positive squares in 2 ways, for example, as 1267876 + 23716 = 1126^2 + 154^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4613 + ... + 4884.

2^1291592 is an apocalyptic number.

It is an amenable number.

1291592 is a deficient number, since it is larger than the sum of its proper divisors (1272868).

1291592 is a wasteful number, since it uses less digits than its factorization.

1291592 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9520 (or 9516 counting only the distinct ones).

The product of its digits is 1620, while the sum is 29.

The square root of 1291592 is about 1136.4822919870. The cubic root of 1291592 is about 108.9034860959.

The spelling of 1291592 in words is "one million, two hundred ninety-one thousand, five hundred ninety-two".