512242321 has 4 divisors (see below), whose sum is σ = 513409600. Its totient is φ = 511075044.

The previous prime is 512242309. The next prime is 512242349. The reversal of 512242321 is 123242215.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 512242321 - 2¹⁵ = 512209553 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 512242292 and 512242301.

It is not an unprimeable number, because it can be changed into a prime (512242301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 582981 + ... + 583858.

It is an arithmetic number, because the mean of its divisors is an integer number (128352400).

Almost surely, 2^512242321 is an apocalyptic number.

It is an amenable number.

512242321 is a deficient number, since it is larger than the sum of its proper divisors (1167279).

512242321 is a wasteful number, since it uses less digits than its factorization.

512242321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1167278.

The product of its digits is 960, while the sum is 22.

The square root of 512242321 is about 22632.7709527579. The cubic root of 512242321 is about 800.1261889486.

Adding to 512242321 its reverse (123242215), we get a palindrome (635484536).

The spelling of 512242321 in words is "five hundred twelve million, two hundred forty-two thousand, three hundred twenty-one".