513204242 has 8 divisors (see below), whose sum is σ = 796351500. Its totient is φ = 247753744.

The previous prime is 513204239. The next prime is 513204253. The reversal of 513204242 is 242402315.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 511619161 + 1585081 = 22619^2 + 1259^2 .

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

It is an unprimeable number.

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, 4424117 + ... + 4424232.

Almost surely, 2^513204242 is an apocalyptic number.

513204242 is a deficient number, since it is larger than the sum of its proper divisors (283147258).

513204242 is a wasteful number, since it uses less digits than its factorization.

513204242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8848380.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 513204242 is about 22654.0116094258. The cubic root of 513204242 is about 800.6267182770.

Adding to 513204242 its reverse (242402315), we get a palindrome (755606557).

The spelling of 513204242 in words is "five hundred thirteen million, two hundred four thousand, two hundred forty-two".