123742111039 has 2 divisors, whose sum is σ = 123742111040. Its totient is φ = 123742111038.

The previous prime is 123742111033. The next prime is 123742111079. The reversal of 123742111039 is 930111247321.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123742111039 - 2⁵ = 123742111007 is a prime.

It is a super-2 number, since 2×123742111039² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 123742110995 and 123742111013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123742111033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61871055519 + 61871055520.

It is an arithmetic number, because the mean of its divisors is an integer number (61871055520).

Almost surely, 2^123742111039 is an apocalyptic number.

123742111039 is a deficient number, since it is larger than the sum of its proper divisors (1).

123742111039 is an equidigital number, since it uses as much as digits as its factorization.

123742111039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 34.

The spelling of 123742111039 in words is "one hundred twenty-three billion, seven hundred forty-two million, one hundred eleven thousand, thirty-nine".