242242668 has 18 divisors (see below), whose sum is σ = 612335724. Its totient is φ = 80747544.

The previous prime is 242242661. The next prime is 242242687. The reversal of 242242668 is 866242242.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 6728963 = 242242668 / (2 + 4 + 2 + 2 + 4 + 2 + 6 + 6 + 8).

It is not an unprimeable number, because it can be changed into a prime (242242661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3364446 + ... + 3364517.

Almost surely, 2^242242668 is an apocalyptic number.

It is an amenable number.

242242668 is an abundant number, since it is smaller than the sum of its proper divisors (370093056).

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

242242668 is a wasteful number, since it uses less digits than its factorization.

242242668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6728973 (or 6728968 counting only the distinct ones).

The product of its digits is 73728, while the sum is 36.

The square root of 242242668 is about 15564.1468767164. The cubic root of 242242668 is about 623.3761948914.

The spelling of 242242668 in words is "two hundred forty-two million, two hundred forty-two thousand, six hundred sixty-eight".