42212241 has 12 divisors (see below), whose sum is σ = 64560132. Its totient is φ = 26486016.

The previous prime is 42212237. The next prime is 42212267. The reversal of 42212241 is 14221224.

42212241 is a `hidden beast` number, since 422 + 1 + 2 + 241 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 30206016 + 12006225 = 5496^2 + 3465^2 .

It is not a de Polignac number, because 42212241 - 2² = 42212237 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42212441) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 137796 + ... + 138101.

It is an arithmetic number, because the mean of its divisors is an integer number (5380011).

Almost surely, 2^42212241 is an apocalyptic number.

It is an amenable number.

42212241 is a deficient number, since it is larger than the sum of its proper divisors (22347891).

42212241 is a wasteful number, since it uses less digits than its factorization.

42212241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275920 (or 275917 counting only the distinct ones).

The product of its digits is 256, while the sum is 18.

The square root of 42212241 is about 6497.0948122988. The cubic root of 42212241 is about 348.1872011033.

Adding to 42212241 its reverse (14221224), we get a palindrome (56433465).

The spelling of 42212241 in words is "forty-two million, two hundred twelve thousand, two hundred forty-one".