1296156 has 12 divisors (see below), whose sum is σ = 3024392. Its totient is φ = 432048.

The previous prime is 1296143. The next prime is 1296167. The reversal of 1296156 is 6516921.

It is a tau number, because it is divible by the number of its divisors (12).

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 3 ways as a sum of consecutive naturals, for example, 53995 + ... + 54018.

2^1296156 is an apocalyptic number.

It is an amenable number.

1296156 is an abundant number, since it is smaller than the sum of its proper divisors (1728236).

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

1296156 is a wasteful number, since it uses less digits than its factorization.

1296156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108020 (or 108018 counting only the distinct ones).

The product of its digits is 3240, while the sum is 30.

The square root of 1296156 is about 1138.4884716149. The cubic root of 1296156 is about 109.0316099440.

The spelling of 1296156 in words is "one million, two hundred ninety-six thousand, one hundred fifty-six".