306242 has 8 divisors (see below), whose sum is σ = 483600. Its totient is φ = 145044.

The previous prime is 306239. The next prime is 306247. The reversal of 306242 is 242603.

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

It is a nialpdrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 306242.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 306242.

It is not an unprimeable number, because it can be changed into a prime (306247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3992 + ... + 4067.

It is an arithmetic number, because the mean of its divisors is an integer number (60450).

2³⁰⁶²⁴² is an apocalyptic number.

306242 is a deficient number, since it is larger than the sum of its proper divisors (177358).

306242 is a wasteful number, since it uses less digits than its factorization.

306242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8080.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 306242 is about 553.3913624190. The cubic root of 306242 is about 67.4044005615.

Adding to 306242 its reverse (242603), we get a palindrome (548845).

The spelling of 306242 in words is "three hundred six thousand, two hundred forty-two".