1323442540125 has 64 divisors (see below), whose sum is σ = 2447259609600. Its totient is φ = 705731774400.

The previous prime is 1323442540019. The next prime is 1323442540129. The reversal of 1323442540125 is 5210452443231.

It is a happy number.

1323442540125 is a `hidden beast` number, since 1 + 32 + 34 + 42 + 540 + 12 + 5 = 666.

It is not a de Polignac number, because 1323442540125 - 2⁹ = 1323442539613 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1323442540125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323442540129) 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 in 63 ways as a sum of consecutive naturals, for example, 26397832 + ... + 26447918.

It is an arithmetic number, because the mean of its divisors is an integer number (38238431400).

Almost surely, 2^{1323442540125} is an apocalyptic number.

1323442540125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1323442540125 is a deficient number, since it is larger than the sum of its proper divisors (1123817069475).

1323442540125 is an equidigital number, since it uses as much as digits as its factorization.

1323442540125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57940 (or 57924 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 36.

Adding to 1323442540125 its reverse (5210452443231), we get a palindrome (6533894983356).

The spelling of 1323442540125 in words is "one trillion, three hundred twenty-three billion, four hundred forty-two million, five hundred forty thousand, one hundred twenty-five".