123240334159 has 2 divisors, whose sum is σ = 123240334160. Its totient is φ = 123240334158.

The previous prime is 123240334153. The next prime is 123240334183. The reversal of 123240334159 is 951433042321.

It is a weak prime.

It is an emirp because it is prime and its reverse (951433042321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123240334159 - 2⁵ = 123240334127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123240334153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61620167079 + 61620167080.

It is an arithmetic number, because the mean of its divisors is an integer number (61620167080).

Almost surely, 2^123240334159 is an apocalyptic number.

123240334159 is a deficient number, since it is larger than the sum of its proper divisors (1).

123240334159 is an equidigital number, since it uses as much as digits as its factorization.

123240334159 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 37.

The spelling of 123240334159 in words is "one hundred twenty-three billion, two hundred forty million, three hundred thirty-four thousand, one hundred fifty-nine".