2102440443 has 4 divisors (see below), whose sum is σ = 2803253928. Its totient is φ = 1401626960.

The previous prime is 2102440441. The next prime is 2102440447. The reversal of 2102440443 is 3440442012.

It is a happy number.

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 2102440443 - 2¹ = 2102440441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2102440441) 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, 350406738 + ... + 350406743.

It is an arithmetic number, because the mean of its divisors is an integer number (700813482).

Almost surely, 2^2102440443 is an apocalyptic number.

2102440443 is a deficient number, since it is larger than the sum of its proper divisors (700813485).

2102440443 is an equidigital number, since it uses as much as digits as its factorization.

2102440443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700813484.

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 2102440443 is about 45852.3766341506. The cubic root of 2102440443 is about 1281.0750333419.

Adding to 2102440443 its reverse (3440442012), we get a palindrome (5542882455).

The spelling of 2102440443 in words is "two billion, one hundred two million, four hundred forty thousand, four hundred forty-three".