318242 has 8 divisors (see below), whose sum is σ = 489132. Its totient is φ = 155200.

The previous prime is 318233. The next prime is 318247. The reversal of 318242 is 242813.

It can be written as a sum of positive squares in 2 ways, for example, as 303601 + 14641 = 551^2 + 121^2 .

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

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 318242.

It is not an unprimeable number, because it can be changed into a prime (318247) by changing a digit.

318242 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1859 + ... + 2022.

2³¹⁸²⁴² is an apocalyptic number.

318242 is a deficient number, since it is larger than the sum of its proper divisors (170890).

318242 is a wasteful number, since it uses less digits than its factorization.

318242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3924.

The product of its digits is 384, while the sum is 20.

The square root of 318242 is about 564.1294177757. The cubic root of 318242 is about 68.2735520518.

The spelling of 318242 in words is "three hundred eighteen thousand, two hundred forty-two".