508205842 has 8 divisors (see below), whose sum is σ = 770874300. Its totient is φ = 251247744.

The previous prime is 508205839. The next prime is 508205849. The reversal of 508205842 is 248502805.

It can be written as a sum of positive squares in 2 ways, for example, as 451520001 + 56685841 = 21249^2 + 7529^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 508205798 and 508205807.

It is not an unprimeable number, because it can be changed into a prime (508205849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1427367 + ... + 1427722.

Almost surely, 2^508205842 is an apocalyptic number.

508205842 is a deficient number, since it is larger than the sum of its proper divisors (262668458).

508205842 is a wasteful number, since it uses less digits than its factorization.

508205842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2855180.

The product of its (nonzero) digits is 25600, while the sum is 34.

The square root of 508205842 is about 22543.4212576530. The cubic root of 508205842 is about 798.0189745134.

The spelling of 508205842 in words is "five hundred eight million, two hundred five thousand, eight hundred forty-two".