115042243321 has 4 divisors (see below), whose sum is σ = 115099281652. Its totient is φ = 114985204992.

The previous prime is 115042243319. The next prime is 115042243331. The reversal of 115042243321 is 123342240511.

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 108791127225 + 6251116096 = 329835^2 + 79064^2 .

It is a cyclic number.

It is not a de Polignac number, because 115042243321 - 2¹ = 115042243319 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 115042243321.

It is not an unprimeable number, because it can be changed into a prime (115042243331) 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 3 ways as a sum of consecutive naturals, for example, 28516140 + ... + 28520173.

It is an arithmetic number, because the mean of its divisors is an integer number (28774820413).

Almost surely, 2^115042243321 is an apocalyptic number.

It is an amenable number.

115042243321 is a deficient number, since it is larger than the sum of its proper divisors (57038331).

115042243321 is an equidigital number, since it uses as much as digits as its factorization.

115042243321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57038330.

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

Adding to 115042243321 its reverse (123342240511), we get a palindrome (238384483832).

The spelling of 115042243321 in words is "one hundred fifteen billion, forty-two million, two hundred forty-three thousand, three hundred twenty-one".