511212242 has 16 divisors (see below), whose sum is σ = 785284632. Its totient is φ = 249500160.

The previous prime is 511212241. The next prime is 511212257. The reversal of 511212242 is 242212115.

It can be written as a sum of positive squares in 4 ways, for example, as 466603201 + 44609041 = 21601^2 + 6679^2 .

It is a super-2 number, since 2×511212242² = 522675912741333128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (511212241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8642 + ... + 33122.

Almost surely, 2^511212242 is an apocalyptic number.

511212242 is a deficient number, since it is larger than the sum of its proper divisors (274072390).

511212242 is a wasteful number, since it uses less digits than its factorization.

511212242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24733.

The product of its digits is 320, while the sum is 20.

The square root of 511212242 is about 22610.0031402032. The cubic root of 511212242 is about 799.5894987720.

Adding to 511212242 its reverse (242212115), we get a palindrome (753424357).

The spelling of 511212242 in words is "five hundred eleven million, two hundred twelve thousand, two hundred forty-two".