1324123140205 has 4 divisors (see below), whose sum is σ = 1588947768252. Its totient is φ = 1059298512160.

The previous prime is 1324123140161. The next prime is 1324123140239. The reversal of 1324123140205 is 5020413214231.

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 615531255364 + 708591884841 = 784558^2 + 841779^2 .

It is not a de Polignac number, because 1324123140205 - 2²¹ = 1324121043053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132412314016 + ... + 132412314025.

It is an arithmetic number, because the mean of its divisors is an integer number (397236942063).

Almost surely, 2^{1324123140205} is an apocalyptic number.

It is an amenable number.

1324123140205 is a deficient number, since it is larger than the sum of its proper divisors (264824628047).

1324123140205 is an equidigital number, since it uses as much as digits as its factorization.

1324123140205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264824628046.

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 1324123140205 its reverse (5020413214231), we get a palindrome (6344536354436).

The spelling of 1324123140205 in words is "one trillion, three hundred twenty-four billion, one hundred twenty-three million, one hundred forty thousand, two hundred five".