2115321442 has 8 divisors (see below), whose sum is σ = 3417057756. Its totient is φ = 976302192.

The previous prime is 2115321437. The next prime is 2115321443. The reversal of 2115321442 is 2441235112.

It can be written as a sum of positive squares in 2 ways, for example, as 1941371721 + 173949721 = 44061^2 + 13189^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (2115321443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40679233 + ... + 40679284.

Almost surely, 2^2115321442 is an apocalyptic number.

2115321442 is a deficient number, since it is larger than the sum of its proper divisors (1301736314).

2115321442 is a wasteful number, since it uses less digits than its factorization.

2115321442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81358532.

The product of its digits is 1920, while the sum is 25.

The square root of 2115321442 is about 45992.6237781669. The cubic root of 2115321442 is about 1283.6859579636.

Adding to 2115321442 its reverse (2441235112), we get a palindrome (4556556554).

The spelling of 2115321442 in words is "two billion, one hundred fifteen million, three hundred twenty-one thousand, four hundred forty-two".