520420443 has 16 divisors (see below), whose sum is σ = 714759936. Its totient is φ = 336621600.

The previous prime is 520420441. The next prime is 520420477. The reversal of 520420443 is 344024025.

It is not a de Polignac number, because 520420443 - 2¹ = 520420441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (520420441) 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 15 ways as a sum of consecutive naturals, for example, 6121 + ... + 32837.

It is an arithmetic number, because the mean of its divisors is an integer number (44672496).

Almost surely, 2^520420443 is an apocalyptic number.

520420443 is a deficient number, since it is larger than the sum of its proper divisors (194339493).

520420443 is a wasteful number, since it uses less digits than its factorization.

520420443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26914.

The product of its (nonzero) digits is 3840, while the sum is 24.

The square root of 520420443 is about 22812.7254618995. The cubic root of 520420443 is about 804.3618223068.

Adding to 520420443 its reverse (344024025), we get a palindrome (864444468).

The spelling of 520420443 in words is "five hundred twenty million, four hundred twenty thousand, four hundred forty-three".