520242543 has 12 divisors (see below), whose sum is σ = 784134000. Its totient is φ = 331748736.

The previous prime is 520242529. The next prime is 520242581. The reversal of 520242543 is 345242025.

It is a happy number.

It is not a de Polignac number, because 520242543 - 2⁵ = 520242511 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520247543) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1256418 + ... + 1256831.

It is an arithmetic number, because the mean of its divisors is an integer number (65344500).

Almost surely, 2^520242543 is an apocalyptic number.

520242543 is a deficient number, since it is larger than the sum of its proper divisors (263891457).

520242543 is a wasteful number, since it uses less digits than its factorization.

520242543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2513278 (or 2513275 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 520242543 is about 22808.8259890771. The cubic root of 520242543 is about 804.2701577828.

Adding to 520242543 its reverse (345242025), we get a palindrome (865484568).

The spelling of 520242543 in words is "five hundred twenty million, two hundred forty-two thousand, five hundred forty-three".