242968821 has 8 divisors (see below), whose sum is σ = 325494624. Its totient is φ = 161211120.

The previous prime is 242968819. The next prime is 242968837. The reversal of 242968821 is 128869242.

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

It is not a de Polignac number, because 242968821 - 2¹ = 242968819 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242968861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191286 + ... + 192551.

It is an arithmetic number, because the mean of its divisors is an integer number (40686828).

Almost surely, 2^242968821 is an apocalyptic number.

It is an amenable number.

242968821 is a deficient number, since it is larger than the sum of its proper divisors (82525803).

242968821 is a wasteful number, since it uses less digits than its factorization.

242968821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384051.

The product of its digits is 110592, while the sum is 42.

The square root of 242968821 is about 15587.4571691472. The cubic root of 242968821 is about 623.9984565009.

The spelling of 242968821 in words is "two hundred forty-two million, nine hundred sixty-eight thousand, eight hundred twenty-one".