242278018 has 4 divisors (see below), whose sum is σ = 363417030. Its totient is φ = 121139008.

The previous prime is 242278009. The next prime is 242278073. The reversal of 242278018 is 810872242.

242278018 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 182169009 + 60109009 = 13497^2 + 7753^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60569503 + ... + 60569506.

Almost surely, 2^242278018 is an apocalyptic number.

242278018 is a deficient number, since it is larger than the sum of its proper divisors (121139012).

242278018 is a wasteful number, since it uses less digits than its factorization.

242278018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121139011.

The product of its (nonzero) digits is 14336, while the sum is 34.

The square root of 242278018 is about 15565.2824580860. The cubic root of 242278018 is about 623.4065161073.

The spelling of 242278018 in words is "two hundred forty-two million, two hundred seventy-eight thousand, eighteen".