505212641242 has 4 divisors (see below), whose sum is σ = 757818961866. Its totient is φ = 252606320620.

The previous prime is 505212641239. The next prime is 505212641243. The reversal of 505212641242 is 242146212505.

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., 499581789721 + 5630851521 = 706811^2 + 75039^2 .

It is a junction number, because it is equal to n+sod(n) for n = 505212641198 and 505212641207.

It is not an unprimeable number, because it can be changed into a prime (505212641243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126303160309 + ... + 126303160312.

Almost surely, 2^505212641242 is an apocalyptic number.

505212641242 is a deficient number, since it is larger than the sum of its proper divisors (252606320624).

505212641242 is a wasteful number, since it uses less digits than its factorization.

505212641242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252606320623.

The product of its (nonzero) digits is 38400, while the sum is 34.

Adding to 505212641242 its reverse (242146212505), we get a palindrome (747358853747).

The spelling of 505212641242 in words is "five hundred five billion, two hundred twelve million, six hundred forty-one thousand, two hundred forty-two".