12104020403 has 4 divisors (see below), whose sum is σ = 12361552800. Its totient is φ = 11846488008.

The previous prime is 12104020387. The next prime is 12104020447. The reversal of 12104020403 is 30402040121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30402040121 = 116371 ⋅261251.

It is a cyclic number.

It is not a de Polignac number, because 12104020403 - 2⁴ = 12104020387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12104020603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128766128 + ... + 128766221.

It is an arithmetic number, because the mean of its divisors is an integer number (3090388200).

Almost surely, 2^12104020403 is an apocalyptic number.

12104020403 is a deficient number, since it is larger than the sum of its proper divisors (257532397).

12104020403 is an equidigital number, since it uses as much as digits as its factorization.

12104020403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257532396.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 12104020403 its reverse (30402040121), we get a palindrome (42506060524).

The spelling of 12104020403 in words is "twelve billion, one hundred four million, twenty thousand, four hundred three".