12256403 has 2 divisors, whose sum is σ = 12256404. Its totient is φ = 12256402.

The previous prime is 12256399. The next prime is 12256421. The reversal of 12256403 is 30465221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12256403 - 2² = 12256399 is a prime.

It is not a weakly prime, because it can be changed into another prime (12256423) by changing a digit.

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 as a sum of consecutive naturals, namely, 6128201 + 6128202.

It is an arithmetic number, because the mean of its divisors is an integer number (6128202).

Almost surely, 2^12256403 is an apocalyptic number.

12256403 is a deficient number, since it is larger than the sum of its proper divisors (1).

12256403 is an equidigital number, since it uses as much as digits as its factorization.

12256403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 12256403 is about 3500.9145947881. The cubic root of 12256403 is about 230.5619717208.

The spelling of 12256403 in words is "twelve million, two hundred fifty-six thousand, four hundred three".