12426403 has 16 divisors (see below), whose sum is σ = 14152320. Its totient is φ = 10811200.

The previous prime is 12426389. The next prime is 12426409. The reversal of 12426403 is 30462421.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12426403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12426409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26376 + ... + 26842.

It is an arithmetic number, because the mean of its divisors is an integer number (884520).

Almost surely, 2^12426403 is an apocalyptic number.

12426403 is a deficient number, since it is larger than the sum of its proper divisors (1725917).

12426403 is a wasteful number, since it uses less digits than its factorization.

12426403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 12426403 is about 3525.1103528826. The cubic root of 12426403 is about 231.6230688161.

Adding to 12426403 its reverse (30462421), we get a palindrome (42888824).

The spelling of 12426403 in words is "twelve million, four hundred twenty-six thousand, four hundred three".