242987843 has 16 divisors (see below), whose sum is σ = 285795264. Its totient is φ = 202227840.

The previous prime is 242987821. The next prime is 242987861. The reversal of 242987843 is 348789242.

It is a cyclic number.

It is not a de Polignac number, because 242987843 - 2⁶ = 242987779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242987803) 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 15 ways as a sum of consecutive naturals, for example, 243221 + ... + 244217.

It is an arithmetic number, because the mean of its divisors is an integer number (17862204).

Almost surely, 2^242987843 is an apocalyptic number.

242987843 is a deficient number, since it is larger than the sum of its proper divisors (42807421).

242987843 is an equidigital number, since it uses as much as digits as its factorization.

242987843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1982.

The product of its digits is 774144, while the sum is 47.

The square root of 242987843 is about 15588.0673272860. The cubic root of 242987843 is about 624.0147403309.

The spelling of 242987843 in words is "two hundred forty-two million, nine hundred eighty-seven thousand, eight hundred forty-three".