123144142123 has 2 divisors, whose sum is σ = 123144142124. Its totient is φ = 123144142122.

The previous prime is 123144142001. The next prime is 123144142153. The reversal of 123144142123 is 321241441321.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123144142123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123144142091 and 123144142100.

It is not a weakly prime, because it can be changed into another prime (123144142153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61572071061 + 61572071062.

It is an arithmetic number, because the mean of its divisors is an integer number (61572071062).

Almost surely, 2^123144142123 is an apocalyptic number.

123144142123 is a deficient number, since it is larger than the sum of its proper divisors (1).

123144142123 is an equidigital number, since it uses as much as digits as its factorization.

123144142123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4608, while the sum is 28.

Adding to 123144142123 its reverse (321241441321), we get a palindrome (444385583444).

The spelling of 123144142123 in words is "one hundred twenty-three billion, one hundred forty-four million, one hundred forty-two thousand, one hundred twenty-three".