513321042 has 16 divisors (see below), whose sum is σ = 1105614720. Its totient is φ = 157944912.

The previous prime is 513321041. The next prime is 513321047. The reversal of 513321042 is 240123315.

It is not an unprimeable number, because it can be changed into a prime (513321041) 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 7 ways as a sum of consecutive naturals, for example, 3290442 + ... + 3290597.

It is an arithmetic number, because the mean of its divisors is an integer number (69100920).

Almost surely, 2^513321042 is an apocalyptic number.

513321042 is an abundant number, since it is smaller than the sum of its proper divisors (592293678).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

513321042 is a wasteful number, since it uses less digits than its factorization.

513321042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6581057.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 513321042 is about 22656.5893726306. The cubic root of 513321042 is about 800.6874518016.

Adding to 513321042 its reverse (240123315), we get a palindrome (753444357).

The spelling of 513321042 in words is "five hundred thirteen million, three hundred twenty-one thousand, forty-two".