1296243 has 20 divisors (see below), whose sum is σ = 2087008. Its totient is φ = 797040.

The previous prime is 1296227. The next prime is 1296277. The reversal of 1296243 is 3426921.

It is not a de Polignac number, because 1296243 - 2⁴ = 1296227 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1296283) 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 19 ways as a sum of consecutive naturals, for example, 438 + ... + 1668.

2^1296243 is an apocalyptic number.

1296243 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1296243 is a deficient number, since it is larger than the sum of its proper divisors (790765).

1296243 is a wasteful number, since it uses less digits than its factorization.

1296243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1256 (or 1247 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 1296243 is about 1138.5266795293. The cubic root of 1296243 is about 109.0340493463.

The spelling of 1296243 in words is "one million, two hundred ninety-six thousand, two hundred forty-three".