242840668 has 36 divisors (see below), whose sum is σ = 495701640. Its totient is φ = 103791072.

The previous prime is 242840659. The next prime is 242840671. The reversal of 242840668 is 866048242.

It is a self number, because there is not a number n which added to its sum of digits gives 242840668.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 80646 + ... + 83602.

It is an arithmetic number, because the mean of its divisors is an integer number (13769490).

Almost surely, 2^242840668 is an apocalyptic number.

242840668 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

242840668 is an abundant number, since it is smaller than the sum of its proper divisors (252860972).

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

242840668 is a wasteful number, since it uses less digits than its factorization.

242840668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3394 (or 3385 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 40.

The square root of 242840668 is about 15583.3458538274. The cubic root of 242840668 is about 623.8887286526. Note that the first 3 decimals are identical.

The spelling of 242840668 in words is "two hundred forty-two million, eight hundred forty thousand, six hundred sixty-eight".