123426536039 has 2 divisors, whose sum is σ = 123426536040. Its totient is φ = 123426536038.

The previous prime is 123426536003. The next prime is 123426536089. The reversal of 123426536039 is 930635624321.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123426536039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123426536089) 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, 61713268019 + 61713268020.

It is an arithmetic number, because the mean of its divisors is an integer number (61713268020).

Almost surely, 2^123426536039 is an apocalyptic number.

123426536039 is a deficient number, since it is larger than the sum of its proper divisors (1).

123426536039 is an equidigital number, since it uses as much as digits as its factorization.

123426536039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 699840, while the sum is 44.

The spelling of 123426536039 in words is "one hundred twenty-three billion, four hundred twenty-six million, five hundred thirty-six thousand, thirty-nine".