42225241 has 4 divisors (see below), whose sum is σ = 42238900. Its totient is φ = 42211584.

The previous prime is 42225173. The next prime is 42225257. The reversal of 42225241 is 14252224.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1201216 + 41024025 = 1096^2 + 6405^2 .

It is a cyclic number.

It is not a de Polignac number, because 42225241 - 2²¹ = 40128089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42225541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 265 + ... + 9193.

It is an arithmetic number, because the mean of its divisors is an integer number (10559725).

Almost surely, 2^42225241 is an apocalyptic number.

It is an amenable number.

42225241 is a deficient number, since it is larger than the sum of its proper divisors (13659).

42225241 is an equidigital number, since it uses as much as digits as its factorization.

42225241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13658.

The product of its digits is 1280, while the sum is 22.

The square root of 42225241 is about 6498.0951824362. The cubic root of 42225241 is about 348.2229408865. Note that the first 3 decimals are identical.

Adding to 42225241 its reverse (14252224), we get a palindrome (56477465).

The spelling of 42225241 in words is "forty-two million, two hundred twenty-five thousand, two hundred forty-one".