2421113543 has 4 divisors (see below), whose sum is σ = 2422197120. Its totient is φ = 2420029968.

The previous prime is 2421113489. The next prime is 2421113549. The reversal of 2421113543 is 3453111242.

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 2421113543 - 2⁸ = 2421113287 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 (2421113549) 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, 538430 + ... + 542907.

It is an arithmetic number, because the mean of its divisors is an integer number (605549280).

Almost surely, 2^2421113543 is an apocalyptic number.

2421113543 is a deficient number, since it is larger than the sum of its proper divisors (1083577).

2421113543 is a wasteful number, since it uses less digits than its factorization.

2421113543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1083576.

The product of its digits is 2880, while the sum is 26.

The square root of 2421113543 is about 49204.8121935243. The cubic root of 2421113543 is about 1342.7805822230.

Adding to 2421113543 its reverse (3453111242), we get a palindrome (5874224785).

The spelling of 2421113543 in words is "two billion, four hundred twenty-one million, one hundred thirteen thousand, five hundred forty-three".