2105242343 has 4 divisors (see below), whose sum is σ = 2110127328. Its totient is φ = 2100357360.

The previous prime is 2105242339. The next prime is 2105242357. The reversal of 2105242343 is 3432425012.

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 2105242343 - 2² = 2105242339 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2105242303) 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, 2441846 + ... + 2442707.

It is an arithmetic number, because the mean of its divisors is an integer number (527531832).

Almost surely, 2^2105242343 is an apocalyptic number.

2105242343 is a deficient number, since it is larger than the sum of its proper divisors (4884985).

2105242343 is an equidigital number, since it uses as much as digits as its factorization.

2105242343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4884984.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 2105242343 is about 45882.9199484950. The cubic root of 2105242343 is about 1281.6438724085.

Adding to 2105242343 its reverse (3432425012), we get a palindrome (5537667355).

The spelling of 2105242343 in words is "two billion, one hundred five million, two hundred forty-two thousand, three hundred forty-three".