2115240443 has 4 divisors (see below), whose sum is σ = 2120763648. Its totient is φ = 2109717240.

The previous prime is 2115240401. The next prime is 2115240461. The reversal of 2115240443 is 3440425112.

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

It is a cyclic number.

It is not a de Polignac number, because 2115240443 - 2⁸ = 2115240187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2115240943) 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, 2761028 + ... + 2761793.

It is an arithmetic number, because the mean of its divisors is an integer number (530190912).

Almost surely, 2^2115240443 is an apocalyptic number.

2115240443 is a deficient number, since it is larger than the sum of its proper divisors (5523205).

2115240443 is an equidigital number, since it uses as much as digits as its factorization.

2115240443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5523204.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 2115240443 is about 45991.7432046232. The cubic root of 2115240443 is about 1283.6695729667.

Adding to 2115240443 its reverse (3440425112), we get a palindrome (5555665555).

The spelling of 2115240443 in words is "two billion, one hundred fifteen million, two hundred forty thousand, four hundred forty-three".