1296875 has 14 divisors (see below), whose sum is σ = 1640604. Its totient is φ = 1025000.

The previous prime is 1296839. The next prime is 1296877. The reversal of 1296875 is 5786921.

It is not a de Polignac number, because 1296875 - 2¹⁶ = 1231339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1296877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 15584 + ... + 15666.

It is an arithmetic number, because the mean of its divisors is an integer number (117186).

2^1296875 is an apocalyptic number.

1296875 is a deficient number, since it is larger than the sum of its proper divisors (343729).

1296875 is an frugal number, since it uses more digits than its factorization.

1296875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113 (or 88 counting only the distinct ones).

The product of its digits is 30240, while the sum is 38.

The square root of 1296875 is about 1138.8041973930. The cubic root of 1296875 is about 109.0517667864.

The spelling of 1296875 in words is "one million, two hundred ninety-six thousand, eight hundred seventy-five".