512242 has 4 divisors (see below), whose sum is σ = 768366. Its totient is φ = 256120.

The previous prime is 512207. The next prime is 512249. The reversal of 512242 is 242215.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 450241 + 62001 = 671^2 + 249^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (512249) by changing a digit.

512242 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128059 + ... + 128062.

2⁵¹²²⁴² is an apocalyptic number.

512242 is a deficient number, since it is larger than the sum of its proper divisors (256124).

512242 is a wasteful number, since it uses less digits than its factorization.

512242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256123.

The product of its digits is 160, while the sum is 16.

The square root of 512242 is about 715.7108354636. The cubic root of 512242 is about 80.0126021814.

Adding to 512242 its reverse (242215), we get a palindrome (754457).

It can be divided in two parts, 512 and 242, that multiplied together give a square (123904 = 352²).

The spelling of 512242 in words is "five hundred twelve thousand, two hundred forty-two".