242968815 has 80 divisors (see below), whose sum is σ = 456857280. Its totient is φ = 123379200.

The previous prime is 242968807. The next prime is 242968819. The reversal of 242968815 is 518869242.

It is not a de Polignac number, because 242968815 - 2³ = 242968807 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242968819) by changing a digit.

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 in 79 ways as a sum of consecutive naturals, for example, 1608990 + ... + 1609140.

It is an arithmetic number, because the mean of its divisors is an integer number (5710716).

Almost surely, 2^242968815 is an apocalyptic number.

242968815 is a deficient number, since it is larger than the sum of its proper divisors (213888465).

242968815 is a wasteful number, since it uses less digits than its factorization.

242968815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334 (or 325 counting only the distinct ones).

The product of its digits is 276480, while the sum is 45.

The square root of 242968815 is about 15587.4569766848. The cubic root of 242968815 is about 623.9984513645.

The spelling of 242968815 in words is "two hundred forty-two million, nine hundred sixty-eight thousand, eight hundred fifteen".