5243121043 has 2 divisors, whose sum is σ = 5243121044. Its totient is φ = 5243121042.

The previous prime is 5243121031. The next prime is 5243121071. The reversal of 5243121043 is 3401213425.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5243121043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5243120999 and 5243121017.

It is not a weakly prime, because it can be changed into another prime (5243121083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2621560521 + 2621560522.

It is an arithmetic number, because the mean of its divisors is an integer number (2621560522).

Almost surely, 2^5243121043 is an apocalyptic number.

5243121043 is a deficient number, since it is larger than the sum of its proper divisors (1).

5243121043 is an equidigital number, since it uses as much as digits as its factorization.

5243121043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 5243121043 is about 72409.3988581593. The cubic root of 5243121043 is about 1737.2538973966.

Adding to 5243121043 its reverse (3401213425), we get a palindrome (8644334468).

The spelling of 5243121043 in words is "five billion, two hundred forty-three million, one hundred twenty-one thousand, forty-three".