2124543243 has 12 divisors (see below), whose sum is σ = 2927054184. Its totient is φ = 1370671200.

The previous prime is 2124543221. The next prime is 2124543257. The reversal of 2124543243 is 3423454212.

It is not a de Polignac number, because 2124543243 - 2¹⁰ = 2124542219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2124543243.

It is not an unprimeable number, because it can be changed into a prime (2124643243) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 365578 + ... + 371343.

It is an arithmetic number, because the mean of its divisors is an integer number (243921182).

Almost surely, 2^2124543243 is an apocalyptic number.

2124543243 is a deficient number, since it is larger than the sum of its proper divisors (802510941).

2124543243 is an equidigital number, since it uses as much as digits as its factorization.

2124543243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736986 (or 736955 counting only the distinct ones).

The product of its digits is 23040, while the sum is 30.

The square root of 2124543243 is about 46092.7677949589. The cubic root of 2124543243 is about 1285.5486749352.

Adding to 2124543243 its reverse (3423454212), we get a palindrome (5547997455).

The spelling of 2124543243 in words is "two billion, one hundred twenty-four million, five hundred forty-three thousand, two hundred forty-three".