4020040543 has 2 divisors, whose sum is σ = 4020040544. Its totient is φ = 4020040542.

The previous prime is 4020040499. The next prime is 4020040553. The reversal of 4020040543 is 3450400204.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4020040543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4020040553) 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, 2010020271 + 2010020272.

It is an arithmetic number, because the mean of its divisors is an integer number (2010020272).

Almost surely, 2^4020040543 is an apocalyptic number.

4020040543 is a deficient number, since it is larger than the sum of its proper divisors (1).

4020040543 is an equidigital number, since it uses as much as digits as its factorization.

4020040543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 4020040543 is about 63403.7896580323. The cubic root of 4020040543 is about 1590.0476684943.

Adding to 4020040543 its reverse (3450400204), we get a palindrome (7470440747).

The spelling of 4020040543 in words is "four billion, twenty million, forty thousand, five hundred forty-three".