242834638 has 8 divisors (see below), whose sum is σ = 364318632. Its totient is φ = 121395096.

The previous prime is 242834623. The next prime is 242834707. The reversal of 242834638 is 836438242.

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

It is a super-2 number, since 2×242834638² = 117937322825182088, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 242834638.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13081 + ... + 25627.

It is an arithmetic number, because the mean of its divisors is an integer number (45539829).

Almost surely, 2^242834638 is an apocalyptic number.

242834638 is a deficient number, since it is larger than the sum of its proper divisors (121483994).

242834638 is a wasteful number, since it uses less digits than its factorization.

242834638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22226.

The product of its digits is 221184, while the sum is 40.

The square root of 242834638 is about 15583.1523768460. The cubic root of 242834638 is about 623.8835646629.

The spelling of 242834638 in words is "two hundred forty-two million, eight hundred thirty-four thousand, six hundred thirty-eight".