42330221 has 16 divisors (see below), whose sum is σ = 47278080. Its totient is φ = 37712640.

The previous prime is 42330209. The next prime is 42330229. The reversal of 42330221 is 12203324.

42330221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 42330221 - 2¹⁰ = 42329197 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42330221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42330229) 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 15 ways as a sum of consecutive naturals, for example, 23915 + ... + 25623.

It is an arithmetic number, because the mean of its divisors is an integer number (2954880).

Almost surely, 2^42330221 is an apocalyptic number.

It is an amenable number.

42330221 is a deficient number, since it is larger than the sum of its proper divisors (4947859).

42330221 is a wasteful number, since it uses less digits than its factorization.

42330221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1804.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 42330221 is about 6506.1679197512. The cubic root of 42330221 is about 348.5112849339.

Adding to 42330221 its reverse (12203324), we get a palindrome (54533545).

The spelling of 42330221 in words is "forty-two million, three hundred thirty thousand, two hundred twenty-one".