505184242 has 4 divisors (see below), whose sum is σ = 757776366. Its totient is φ = 252592120.

The previous prime is 505184233. The next prime is 505184243. The reversal of 505184242 is 242481505.

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., 348158281 + 157025961 = 18659^2 + 12531^2 .

It is a super-2 number, since 2×505184242² = 510422236730229128, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (505184243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126296059 + ... + 126296062.

Almost surely, 2^505184242 is an apocalyptic number.

505184242 is a deficient number, since it is larger than the sum of its proper divisors (252592124).

505184242 is a wasteful number, since it uses less digits than its factorization.

505184242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252592123.

The product of its (nonzero) digits is 12800, while the sum is 31.

The square root of 505184242 is about 22476.3040111136. The cubic root of 505184242 is about 796.4342564961.

The spelling of 505184242 in words is "five hundred five million, one hundred eighty-four thousand, two hundred forty-two".