42221133 has 6 divisors (see below), whose sum is σ = 60986094. Its totient is φ = 28147416.

The previous prime is 42221119. The next prime is 42221143. The reversal of 42221133 is 33112224.

42221133 is a `hidden beast` number, since 422 + 211 + 33 = 666.

It can be written as a sum of positive squares in only one way, i.e., 42029289 + 191844 = 6483^2 + 438^2 .

It is not a de Polignac number, because 42221133 - 2⁴ = 42221117 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42221143) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2345610 + ... + 2345627.

It is an arithmetic number, because the mean of its divisors is an integer number (10164349).

Almost surely, 2^42221133 is an apocalyptic number.

It is an amenable number.

42221133 is a deficient number, since it is larger than the sum of its proper divisors (18764961).

42221133 is a wasteful number, since it uses less digits than its factorization.

42221133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4691243 (or 4691240 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 42221133 is about 6497.7790821172. The cubic root of 42221133 is about 348.2116479079.

Adding to 42221133 its reverse (33112224), we get a palindrome (75333357).

The spelling of 42221133 in words is "forty-two million, two hundred twenty-one thousand, one hundred thirty-three".