506405242 has 16 divisors (see below), whose sum is σ = 868412160. Its totient is φ = 216958608.

The previous prime is 506405209. The next prime is 506405267. The reversal of 506405242 is 242504605.

It is a self number, because there is not a number n which added to its sum of digits gives 506405242.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78184 + ... + 84412.

It is an arithmetic number, because the mean of its divisors is an integer number (54275760).

Almost surely, 2^506405242 is an apocalyptic number.

506405242 is a deficient number, since it is larger than the sum of its proper divisors (362006918).

506405242 is a wasteful number, since it uses less digits than its factorization.

506405242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12045.

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 506405242 is about 22503.4495577900. The cubic root of 506405242 is about 797.0753848533.

Adding to 506405242 its reverse (242504605), we get a palindrome (748909847).

The spelling of 506405242 in words is "five hundred six million, four hundred five thousand, two hundred forty-two".