512721760242 has 16 divisors (see below), whose sum is σ = 1060803642240. Its totient is φ = 165013899792.

The previous prime is 512721760237. The next prime is 512721760249. The reversal of 512721760242 is 242067127215.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 512721760242.

It is not an unprimeable number, because it can be changed into a prime (512721760249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1473338218 + ... + 1473338565.

It is an arithmetic number, because the mean of its divisors is an integer number (66300227640).

Almost surely, 2^512721760242 is an apocalyptic number.

512721760242 is an abundant number, since it is smaller than the sum of its proper divisors (548081881998).

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

512721760242 is a wasteful number, since it uses less digits than its factorization.

512721760242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2946676817.

The product of its (nonzero) digits is 94080, while the sum is 39.

Adding to 512721760242 its reverse (242067127215), we get a palindrome (754788887457).

The spelling of 512721760242 in words is "five hundred twelve billion, seven hundred twenty-one million, seven hundred sixty thousand, two hundred forty-two".