509308242 has 8 divisors (see below), whose sum is σ = 1018616496. Its totient is φ = 169769412.

The previous prime is 509308223. The next prime is 509308249. The reversal of 509308242 is 242803905.

It is a happy number.

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

509308242 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (509308249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42442348 + ... + 42442359.

It is an arithmetic number, because the mean of its divisors is an integer number (127327062).

Almost surely, 2^509308242 is an apocalyptic number.

509308242 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

509308242 is a wasteful number, since it uses less digits than its factorization.

509308242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84884712.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 509308242 is about 22567.8586046616. The cubic root of 509308242 is about 798.5955786519.

The spelling of 509308242 in words is "five hundred nine million, three hundred eight thousand, two hundred forty-two".