520342003 has 4 divisors (see below), whose sum is σ = 520419240. Its totient is φ = 520264768.

The previous prime is 520341959. The next prime is 520342013. The reversal of 520342003 is 300243025.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 520342003 - 2²¹ = 518244851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520342013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27433 + ... + 42346.

It is an arithmetic number, because the mean of its divisors is an integer number (130104810).

Almost surely, 2^520342003 is an apocalyptic number.

520342003 is a deficient number, since it is larger than the sum of its proper divisors (77237).

520342003 is an equidigital number, since it uses as much as digits as its factorization.

520342003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77236.

The product of its (nonzero) digits is 720, while the sum is 19.

The square root of 520342003 is about 22811.0061812275. The cubic root of 520342003 is about 804.3214079889.

Adding to 520342003 its reverse (300243025), we get a palindrome (820585028).

The spelling of 520342003 in words is "five hundred twenty million, three hundred forty-two thousand, three".