5243421243 has 16 divisors (see below), whose sum is σ = 7169240736. Its totient is φ = 3406786560.

The previous prime is 5243421217. The next prime is 5243421307. The reversal of 5243421243 is 3421243425.

It is not a de Polignac number, because 5243421243 - 2⁶ = 5243421179 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5243421243.

It is not an unprimeable number, because it can be changed into a prime (5243491243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98355 + ... + 141987.

It is an arithmetic number, because the mean of its divisors is an integer number (448077546).

Almost surely, 2^5243421243 is an apocalyptic number.

5243421243 is a deficient number, since it is larger than the sum of its proper divisors (1925819493).

5243421243 is a wasteful number, since it uses less digits than its factorization.

5243421243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44654.

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

The square root of 5243421243 is about 72411.4717638027. The cubic root of 5243421243 is about 1737.2870528182.

Adding to 5243421243 its reverse (3421243425), we get a palindrome (8664664668).

The spelling of 5243421243 in words is "five billion, two hundred forty-three million, four hundred twenty-one thousand, two hundred forty-three".