242956845 has 12 divisors (see below), whose sum is σ = 421125276. Its totient is φ = 129576960.

The previous prime is 242956841. The next prime is 242956859. The reversal of 242956845 is 548659242.

242956845 is a `hidden beast` number, since 2 + 42 + 9 + 568 + 45 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 183142089 + 59814756 = 13533^2 + 7734^2 .

It is not a de Polignac number, because 242956845 - 2² = 242956841 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 5399041 = 242956845 / (2 + 4 + 2 + 9 + 5 + 6 + 8 + 4 + 5).

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 242956845.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242956841) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 2699476 + ... + 2699565.

It is an arithmetic number, because the mean of its divisors is an integer number (35093773).

Almost surely, 2^242956845 is an apocalyptic number.

It is an amenable number.

242956845 is a deficient number, since it is larger than the sum of its proper divisors (178168431).

242956845 is a wasteful number, since it uses less digits than its factorization.

242956845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5399052 (or 5399049 counting only the distinct ones).

The product of its digits is 691200, while the sum is 45.

The square root of 242956845 is about 15587.0730093883. The cubic root of 242956845 is about 623.9882039807.

The spelling of 242956845 in words is "two hundred forty-two million, nine hundred fifty-six thousand, eight hundred forty-five".