123042205165 has 16 divisors (see below), whose sum is σ = 169550982720. Its totient is φ = 84775489920.

The previous prime is 123042205109. The next prime is 123042205193. The reversal of 123042205165 is 561502240321.

It is not a de Polignac number, because 123042205165 - 2¹³ = 123042196973 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58870824 + ... + 58872913.

It is an arithmetic number, because the mean of its divisors is an integer number (10596936420).

Almost surely, 2^123042205165 is an apocalyptic number.

It is an amenable number.

123042205165 is a deficient number, since it is larger than the sum of its proper divisors (46508777555).

123042205165 is a wasteful number, since it uses less digits than its factorization.

123042205165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117743772.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 123042205165 its reverse (561502240321), we get a palindrome (684544445486).

The spelling of 123042205165 in words is "one hundred twenty-three billion, forty-two million, two hundred five thousand, one hundred sixty-five".