318242242 has 4 divisors (see below), whose sum is σ = 477363366. Its totient is φ = 159121120.

The previous prime is 318242231. The next prime is 318242251. The reversal of 318242242 is 242242813.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 318229921 + 12321 = 17839^2 + 111^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 318242242.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79560559 + ... + 79560562.

Almost surely, 2^318242242 is an apocalyptic number.

318242242 is a deficient number, since it is larger than the sum of its proper divisors (159121124).

318242242 is a wasteful number, since it uses less digits than its factorization.

318242242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159121123.

The product of its digits is 6144, while the sum is 28.

The square root of 318242242 is about 17839.3453355217. The cubic root of 318242242 is about 682.7356935745.

The spelling of 318242242 in words is "three hundred eighteen million, two hundred forty-two thousand, two hundred forty-two".