123542325019 has 2 divisors, whose sum is σ = 123542325020. Its totient is φ = 123542325018.

The previous prime is 123542325007. The next prime is 123542325113. The reversal of 123542325019 is 910523245321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123542325019 - 2⁵ = 123542324987 is a prime.

It is a super-2 number, since 2×123542325019² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (123542325119) 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, 61771162509 + 61771162510.

It is an arithmetic number, because the mean of its divisors is an integer number (61771162510).

Almost surely, 2^123542325019 is an apocalyptic number.

123542325019 is a deficient number, since it is larger than the sum of its proper divisors (1).

123542325019 is an equidigital number, since it uses as much as digits as its factorization.

123542325019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64800, while the sum is 37.

The spelling of 123542325019 in words is "one hundred twenty-three billion, five hundred forty-two million, three hundred twenty-five thousand, nineteen".