512315242 has 4 divisors (see below), whose sum is σ = 768472866. Its totient is φ = 256157620.

The previous prime is 512315233. The next prime is 512315257. The reversal of 512315242 is 242513215.

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., 496799521 + 15515721 = 22289^2 + 3939^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128078809 + ... + 128078812.

Almost surely, 2^512315242 is an apocalyptic number.

512315242 is a deficient number, since it is larger than the sum of its proper divisors (256157624).

512315242 is a wasteful number, since it uses less digits than its factorization.

512315242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256157623.

The product of its digits is 2400, while the sum is 25.

The square root of 512315242 is about 22634.3818559288. The cubic root of 512315242 is about 800.1641548558.

Adding to 512315242 its reverse (242513215), we get a palindrome (754828457).

The spelling of 512315242 in words is "five hundred twelve million, three hundred fifteen thousand, two hundred forty-two".