1290392 has 16 divisors (see below), whose sum is σ = 2525040. Its totient is φ = 617056.

The previous prime is 1290379. The next prime is 1290427. The reversal of 1290392 is 2930921.

It is a super-2 number, since 2×1290392² = 3330223027328, which contains 22 as substring.

It is a congruent number.

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, 3323 + ... + 3690.

It is an arithmetic number, because the mean of its divisors is an integer number (157815).

2^1290392 is an apocalyptic number.

It is an amenable number.

1290392 is a deficient number, since it is larger than the sum of its proper divisors (1234648).

1290392 is a wasteful number, since it uses less digits than its factorization.

1290392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7042 (or 7038 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 1290392 is about 1135.9542244298. The cubic root of 1290392 is about 108.8697487453.

The spelling of 1290392 in words is "one million, two hundred ninety thousand, three hundred ninety-two".