12003434123 has 2 divisors, whose sum is σ = 12003434124. Its totient is φ = 12003434122.

The previous prime is 12003434119. The next prime is 12003434159. The reversal of 12003434123 is 32143430021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12003434123 - 2² = 12003434119 is a prime.

It is not a weakly prime, because it can be changed into another prime (12003434173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6001717061 + 6001717062.

It is an arithmetic number, because the mean of its divisors is an integer number (6001717062).

Almost surely, 2^12003434123 is an apocalyptic number.

12003434123 is a deficient number, since it is larger than the sum of its proper divisors (1).

12003434123 is an equidigital number, since it uses as much as digits as its factorization.

12003434123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 12003434123 its reverse (32143430021), we get a palindrome (44146864144).

The spelling of 12003434123 in words is "twelve billion, three million, four hundred thirty-four thousand, one hundred twenty-three".