1296528403 has 4 divisors (see below), whose sum is σ = 1364766760. Its totient is φ = 1228290048.

The previous prime is 1296528367. The next prime is 1296528413. The reversal of 1296528403 is 3048256921.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1296528403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1296528413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34119150 + ... + 34119187.

It is an arithmetic number, because the mean of its divisors is an integer number (341191690).

Almost surely, 2^1296528403 is an apocalyptic number.

1296528403 is a deficient number, since it is larger than the sum of its proper divisors (68238357).

1296528403 is an equidigital number, since it uses as much as digits as its factorization.

1296528403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68238356.

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 1296528403 is about 36007.3381826538. The cubic root of 1296528403 is about 1090.4205102531.

The spelling of 1296528403 in words is "one billion, two hundred ninety-six million, five hundred twenty-eight thousand, four hundred three".