42221223 has 16 divisors (see below), whose sum is σ = 68236800. Its totient is φ = 25588440.

The previous prime is 42221219. The next prime is 42221239. The reversal of 42221223 is 32212224.

42221223 is a `hidden beast` number, since 422 + 21 + 223 = 666.

42221223 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42221223 - 2² = 42221219 is a prime.

It is a zygodrome in base 3.

It is a junction number, because it is equal to n+sod(n) for n = 42221196 and 42221205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42221203) 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, 70783 + ... + 71376.

It is an arithmetic number, because the mean of its divisors is an integer number (4264800).

Almost surely, 2^42221223 is an apocalyptic number.

42221223 is a deficient number, since it is larger than the sum of its proper divisors (26015577).

42221223 is a wasteful number, since it uses less digits than its factorization.

42221223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142179 (or 142173 counting only the distinct ones).

The product of its digits is 384, while the sum is 18.

The square root of 42221223 is about 6497.7860075567. The cubic root of 42221223 is about 348.2118953276.

Adding to 42221223 its reverse (32212224), we get a palindrome (74433447).

It can be divided in two parts, 4222 and 1223, that added together give a palindrome (5445).

The spelling of 42221223 in words is "forty-two million, two hundred twenty-one thousand, two hundred twenty-three".