220665242 has 16 divisors (see below), whose sum is σ = 379363392. Its totient is φ = 94300800.

The previous prime is 220665233. The next prime is 220665257. The reversal of 220665242 is 242566022.

It is a happy number.

220665242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17384 + ... + 27267.

It is an arithmetic number, because the mean of its divisors is an integer number (23710212).

Almost surely, 2^220665242 is an apocalyptic number.

220665242 is a deficient number, since it is larger than the sum of its proper divisors (158698150).

220665242 is a wasteful number, since it uses less digits than its factorization.

220665242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45013.

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 220665242 is about 14854.8053504581. The cubic root of 220665242 is about 604.2889371643.

The spelling of 220665242 in words is "two hundred twenty million, six hundred sixty-five thousand, two hundred forty-two".