520530442 has 8 divisors (see below), whose sum is σ = 791491716. Its totient is φ = 256699872.

The previous prime is 520530431. The next prime is 520530443. The reversal of 520530442 is 244035025.

It can be written as a sum of positive squares in 2 ways, for example, as 449482401 + 71048041 = 21201^2 + 8429^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (520530443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1782493 + ... + 1782784.

Almost surely, 2^520530442 is an apocalyptic number.

520530442 is a deficient number, since it is larger than the sum of its proper divisors (270961274).

520530442 is a wasteful number, since it uses less digits than its factorization.

520530442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3565352.

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 520530442 is about 22815.1362476756. The cubic root of 520530442 is about 804.4184897982.

Adding to 520530442 its reverse (244035025), we get a palindrome (764565467).

The spelling of 520530442 in words is "five hundred twenty million, five hundred thirty thousand, four hundred forty-two".