20240543 has 2 divisors, whose sum is σ = 20240544. Its totient is φ = 20240542.

The previous prime is 20240533. The next prime is 20240581. The reversal of 20240543 is 34504202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20240543 - 2⁸ = 20240287 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20240533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10120271 + 10120272.

It is an arithmetic number, because the mean of its divisors is an integer number (10120272).

Almost surely, 2^20240543 is an apocalyptic number.

20240543 is a deficient number, since it is larger than the sum of its proper divisors (1).

20240543 is an equidigital number, since it uses as much as digits as its factorization.

20240543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 20240543 is about 4498.9490995120. The cubic root of 20240543 is about 272.5256514303.

Adding to 20240543 its reverse (34504202), we get a palindrome (54744745).

The spelling of 20240543 in words is "twenty million, two hundred forty thousand, five hundred forty-three".