42041240543 has 2 divisors, whose sum is σ = 42041240544. Its totient is φ = 42041240542.

The previous prime is 42041240531. The next prime is 42041240617. The reversal of 42041240543 is 34504214024.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42041240543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42041540543) 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, 21020620271 + 21020620272.

It is an arithmetic number, because the mean of its divisors is an integer number (21020620272).

Almost surely, 2^42041240543 is an apocalyptic number.

42041240543 is a deficient number, since it is larger than the sum of its proper divisors (1).

42041240543 is an equidigital number, since it uses as much as digits as its factorization.

42041240543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15360, while the sum is 29.

Adding to 42041240543 its reverse (34504214024), we get a palindrome (76545454567).

The spelling of 42041240543 in words is "forty-two billion, forty-one million, two hundred forty thousand, five hundred forty-three".