123142767793 has 2 divisors, whose sum is σ = 123142767794. Its totient is φ = 123142767792.

The previous prime is 123142767739. The next prime is 123142767799. The reversal of 123142767793 is 397767241321.

Together with previous prime (123142767739) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 103190640289 + 19952127504 = 321233^2 + 141252^2 .

It is an emirp because it is prime and its reverse (397767241321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123142767793 - 2²¹ = 123140670641 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123142767793.

It is not a weakly prime, because it can be changed into another prime (123142767799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61571383896 + 61571383897.

It is an arithmetic number, because the mean of its divisors is an integer number (61571383897).

Almost surely, 2^123142767793 is an apocalyptic number.

It is an amenable number.

123142767793 is a deficient number, since it is larger than the sum of its proper divisors (1).

123142767793 is an equidigital number, since it uses as much as digits as its factorization.

123142767793 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2667168, while the sum is 52.

The spelling of 123142767793 in words is "one hundred twenty-three billion, one hundred forty-two million, seven hundred sixty-seven thousand, seven hundred ninety-three".