12403145403 has 24 divisors (see below), whose sum is σ = 19629732720. Its totient is φ = 7484218560.

The previous prime is 12403145387. The next prime is 12403145407. The reversal of 12403145403 is 30454130421.

It is a happy number.

12403145403 is a `hidden beast` number, since 1 + 240 + 3 + 14 + 5 + 403 = 666.

It is not a de Polignac number, because 12403145403 - 2⁴ = 12403145387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12403145407) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 250876 + ... + 296217.

It is an arithmetic number, because the mean of its divisors is an integer number (817905530).

Almost surely, 2^12403145403 is an apocalyptic number.

12403145403 is a deficient number, since it is larger than the sum of its proper divisors (7226587317).

12403145403 is a wasteful number, since it uses less digits than its factorization.

12403145403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547339 (or 547336 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 12403145403 its reverse (30454130421), we get a palindrome (42857275824).

The spelling of 12403145403 in words is "twelve billion, four hundred three million, one hundred forty-five thousand, four hundred three".