242718940 has 24 divisors (see below), whose sum is σ = 510138720. Its totient is φ = 97005888.

The previous prime is 242718919. The next prime is 242718989. The reversal of 242718940 is 49817242.

It is a self number, because there is not a number n which added to its sum of digits gives 242718940.

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 7 ways as a sum of consecutive naturals, for example, 23041 + ... + 31879.

It is an arithmetic number, because the mean of its divisors is an integer number (21255780).

Almost surely, 2^242718940 is an apocalyptic number.

242718940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

242718940 is an abundant number, since it is smaller than the sum of its proper divisors (267419780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

242718940 is a wasteful number, since it uses less digits than its factorization.

242718940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10221 (or 10219 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 242718940 is about 15579.4396561622. The cubic root of 242718940 is about 623.7844662971.

The spelling of 242718940 in words is "two hundred forty-two million, seven hundred eighteen thousand, nine hundred forty".