242386509 has 8 divisors (see below), whose sum is σ = 323387872. Its totient is φ = 161488080.

The previous prime is 242386483. The next prime is 242386517. The reversal of 242386509 is 905683242.

It is a happy number.

242386509 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 242386509 - 2⁸ = 242386253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242386589) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20059 + ... + 29784.

It is an arithmetic number, because the mean of its divisors is an integer number (40423484).

Almost surely, 2^242386509 is an apocalyptic number.

It is an amenable number.

242386509 is a deficient number, since it is larger than the sum of its proper divisors (81001363).

242386509 is a wasteful number, since it uses less digits than its factorization.

242386509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51467.

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 242386509 is about 15568.7670995490. The cubic root of 242386509 is about 623.4995550934.

The spelling of 242386509 in words is "two hundred forty-two million, three hundred eighty-six thousand, five hundred nine".