123423400304143 has 2 divisors, whose sum is σ = 123423400304144. Its totient is φ = 123423400304142.

The previous prime is 123423400304131. The next prime is 123423400304179. The reversal of 123423400304143 is 341403004324321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123423400304143 - 2¹⁷ = 123423400173071 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123423400304099 and 123423400304108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123423400304443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61711700152071 + 61711700152072.

It is an arithmetic number, because the mean of its divisors is an integer number (61711700152072).

Almost surely, 2^{123423400304143} is an apocalyptic number.

123423400304143 is a deficient number, since it is larger than the sum of its proper divisors (1).

123423400304143 is an equidigital number, since it uses as much as digits as its factorization.

123423400304143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 34.

Adding to 123423400304143 its reverse (341403004324321), we get a palindrome (464826404628464).

The spelling of 123423400304143 in words is "one hundred twenty-three trillion, four hundred twenty-three billion, four hundred million, three hundred four thousand, one hundred forty-three".