12404123403 has 32 divisors (see below), whose sum is σ = 19704532992. Its totient is φ = 6791472000.

The previous prime is 12404123377. The next prime is 12404123411. The reversal of 12404123403 is 30432140421.

It is not a de Polignac number, because 12404123403 - 2⁵ = 12404123371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12404123603) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28576 + ... + 160077.

It is an arithmetic number, because the mean of its divisors is an integer number (615766656).

Almost surely, 2^12404123403 is an apocalyptic number.

12404123403 is a deficient number, since it is larger than the sum of its proper divisors (7300409589).

12404123403 is a wasteful number, since it uses less digits than its factorization.

12404123403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188795.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 12404123403 its reverse (30432140421), we get a palindrome (42836263824).

The spelling of 12404123403 in words is "twelve billion, four hundred four million, one hundred twenty-three thousand, four hundred three".