2017042543 has 2 divisors, whose sum is σ = 2017042544. Its totient is φ = 2017042542.

The previous prime is 2017042513. The next prime is 2017042561. The reversal of 2017042543 is 3452407102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2017042543 - 2¹⁷ = 2016911471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2017042513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1008521271 + 1008521272.

It is an arithmetic number, because the mean of its divisors is an integer number (1008521272).

Almost surely, 2^2017042543 is an apocalyptic number.

2017042543 is a deficient number, since it is larger than the sum of its proper divisors (1).

2017042543 is an equidigital number, since it uses as much as digits as its factorization.

2017042543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 2017042543 is about 44911.4967797779. The cubic root of 2017042543 is about 1263.4896424707.

Adding to 2017042543 its reverse (3452407102), we get a palindrome (5469449645).

The spelling of 2017042543 in words is "two billion, seventeen million, forty-two thousand, five hundred forty-three".