505018342 has 4 divisors (see below), whose sum is σ = 757527516. Its totient is φ = 252509170.

The previous prime is 505018333. The next prime is 505018343. The reversal of 505018342 is 243810505.

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

It is a self number, because there is not a number n which added to its sum of digits gives 505018342.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505018343) 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, 126254584 + ... + 126254587.

It is an arithmetic number, because the mean of its divisors is an integer number (189381879).

Almost surely, 2^505018342 is an apocalyptic number.

505018342 is a deficient number, since it is larger than the sum of its proper divisors (252509174).

505018342 is a wasteful number, since it uses less digits than its factorization.

505018342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252509173.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 505018342 is about 22472.6131546823. The cubic root of 505018342 is about 796.3470652642.

Adding to 505018342 its reverse (243810505), we get a palindrome (748828847).

The spelling of 505018342 in words is "five hundred five million, eighteen thousand, three hundred forty-two".