12143123423 has 2 divisors, whose sum is σ = 12143123424. Its totient is φ = 12143123422.

The previous prime is 12143123393. The next prime is 12143123431. The reversal of 12143123423 is 32432134121.

It is a strong prime.

It is an emirp because it is prime and its reverse (32432134121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12143123423 - 2¹⁶ = 12143057887 is a prime.

It is a super-2 number, since 2×12143123423² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 12143123392 and 12143123401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12143123323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6071561711 + 6071561712.

It is an arithmetic number, because the mean of its divisors is an integer number (6071561712).

Almost surely, 2^12143123423 is an apocalyptic number.

12143123423 is a deficient number, since it is larger than the sum of its proper divisors (1).

12143123423 is an equidigital number, since it uses as much as digits as its factorization.

12143123423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 26.

Adding to 12143123423 its reverse (32432134121), we get a palindrome (44575257544).

The spelling of 12143123423 in words is "twelve billion, one hundred forty-three million, one hundred twenty-three thousand, four hundred twenty-three".