242215238 has 8 divisors (see below), whose sum is σ = 365149200. Its totient is φ = 120498840.

The previous prime is 242215223. The next prime is 242215291. The reversal of 242215238 is 832512242.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 242215238.

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, 303893 + ... + 304688.

It is an arithmetic number, because the mean of its divisors is an integer number (45643650).

Almost surely, 2^242215238 is an apocalyptic number.

242215238 is a deficient number, since it is larger than the sum of its proper divisors (122933962).

242215238 is a wasteful number, since it uses less digits than its factorization.

242215238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608782.

The product of its digits is 7680, while the sum is 29.

The square root of 242215238 is about 15563.2656598800. The cubic root of 242215238 is about 623.3526649677.

The spelling of 242215238 in words is "two hundred forty-two million, two hundred fifteen thousand, two hundred thirty-eight".