123895242598321 has 4 divisors (see below), whose sum is σ = 123895280370532. Its totient is φ = 123895204826112.

The previous prime is 123895242598229. The next prime is 123895242598343.

It is a happy number.

123895242598321 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 46085836709025 + 77809405889296 = 6788655^2 + 8820964^2 .

It is a cyclic number.

It is not a de Polignac number, because 123895242598321 - 2²⁵ = 123895209043889 is a prime.

It is a super-2 number, since 2×123895242598321² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123895242593321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13443120 + ... + 20700433.

It is an arithmetic number, because the mean of its divisors is an integer number (30973820092633).

Almost surely, 2^{123895242598321} is an apocalyptic number.

It is an amenable number.

123895242598321 is a deficient number, since it is larger than the sum of its proper divisors (37772211).

123895242598321 is an equidigital number, since it uses as much as digits as its factorization.

123895242598321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37772210.

The product of its digits is 74649600, while the sum is 64.

The spelling of 123895242598321 in words is "one hundred twenty-three trillion, eight hundred ninety-five billion, two hundred forty-two million, five hundred ninety-eight thousand, three hundred twenty-one".