123030139773187 has 2 divisors, whose sum is σ = 123030139773188. Its totient is φ = 123030139773186.

The previous prime is 123030139773173. The next prime is 123030139773197. The reversal of 123030139773187 is 781377931030321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123030139773187 - 2⁷ = 123030139773059 is a prime.

It is not a weakly prime, because it can be changed into another prime (123030139773127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61515069886593 + 61515069886594.

It is an arithmetic number, because the mean of its divisors is an integer number (61515069886594).

Almost surely, 2^{123030139773187} is an apocalyptic number.

123030139773187 is a deficient number, since it is larger than the sum of its proper divisors (1).

123030139773187 is an equidigital number, since it uses as much as digits as its factorization.

123030139773187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4000752, while the sum is 55.

The spelling of 123030139773187 in words is "one hundred twenty-three trillion, thirty billion, one hundred thirty-nine million, seven hundred seventy-three thousand, one hundred eighty-seven".