242220066 has 16 divisors (see below), whose sum is σ = 528480288. Its totient is φ = 73400000.

The previous prime is 242220031. The next prime is 242220067. The reversal of 242220066 is 660022242.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (242220067) 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 7 ways as a sum of consecutive naturals, for example, 1834935 + ... + 1835066.

It is an arithmetic number, because the mean of its divisors is an integer number (33030018).

Almost surely, 2^242220066 is an apocalyptic number.

242220066 is an abundant number, since it is smaller than the sum of its proper divisors (286260222).

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

242220066 is a wasteful number, since it uses less digits than its factorization.

242220066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3670017.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 242220066 is about 15563.4207679417. The cubic root of 242220066 is about 623.3568066376.

The spelling of 242220066 in words is "two hundred forty-two million, two hundred twenty thousand, sixty-six".