12560403 has 4 divisors (see below), whose sum is σ = 16747208. Its totient is φ = 8373600.

The previous prime is 12560347. The next prime is 12560407. The reversal of 12560403 is 30406521.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30406521 = 3 ⋅10135507.

It is not a de Polignac number, because 12560403 - 2⁸ = 12560147 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12560403.

It is not an unprimeable number, because it can be changed into a prime (12560407) 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 3 ways as a sum of consecutive naturals, for example, 2093398 + ... + 2093403.

It is an arithmetic number, because the mean of its divisors is an integer number (4186802).

Almost surely, 2^12560403 is an apocalyptic number.

12560403 is a deficient number, since it is larger than the sum of its proper divisors (4186805).

12560403 is an equidigital number, since it uses as much as digits as its factorization.

12560403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4186804.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 12560403 is about 3544.0658853921. The cubic root of 12560403 is about 232.4526623478.

Adding to 12560403 its reverse (30406521), we get a palindrome (42966924).

The spelling of 12560403 in words is "twelve million, five hundred sixty thousand, four hundred three".