242661388 has 36 divisors (see below), whose sum is σ = 452919880. Its totient is φ = 113443200.

The previous prime is 242661361. The next prime is 242661439. The reversal of 242661388 is 883166242.

242661388 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 242661388.

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, 775120 + ... + 775432.

Almost surely, 2^242661388 is an apocalyptic number.

It is an amenable number.

242661388 is a deficient number, since it is larger than the sum of its proper divisors (210258492).

242661388 is a wasteful number, since it uses less digits than its factorization.

242661388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538 (or 435 counting only the distinct ones).

The product of its digits is 110592, while the sum is 40.

The square root of 242661388 is about 15577.5924969168. The cubic root of 242661388 is about 623.7351597735.

It can be divided in two parts, 242661 and 388, that added together give a square (243049 = 493²).

The spelling of 242661388 in words is "two hundred forty-two million, six hundred sixty-one thousand, three hundred eighty-eight".