4121540543 has 2 divisors, whose sum is σ = 4121540544. Its totient is φ = 4121540542.

The previous prime is 4121540531. The next prime is 4121540561. The reversal of 4121540543 is 3450451214.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4121540543 - 2¹⁰ = 4121539519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4121540513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2060770271 + 2060770272.

It is an arithmetic number, because the mean of its divisors is an integer number (2060770272).

Almost surely, 2^4121540543 is an apocalyptic number.

4121540543 is a deficient number, since it is larger than the sum of its proper divisors (1).

4121540543 is an equidigital number, since it uses as much as digits as its factorization.

4121540543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 4121540543 is about 64199.2254080997. The cubic root of 4121540543 is about 1603.3187031580.

Adding to 4121540543 its reverse (3450451214), we get a palindrome (7571991757).

The spelling of 4121540543 in words is "four billion, one hundred twenty-one million, five hundred forty thousand, five hundred forty-three".