42224461 has 2 divisors, whose sum is σ = 42224462. Its totient is φ = 42224460.

The previous prime is 42224459. The next prime is 42224477. The reversal of 42224461 is 16442224.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39300361 + 2924100 = 6269^2 + 1710^2 .

It is a cyclic number.

It is not a de Polignac number, because 42224461 - 2¹ = 42224459 is a prime.

Together with 42224459, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42224401) 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 as a sum of consecutive naturals, namely, 21112230 + 21112231.

It is an arithmetic number, because the mean of its divisors is an integer number (21112231).

Almost surely, 2^42224461 is an apocalyptic number.

It is an amenable number.

42224461 is a deficient number, since it is larger than the sum of its proper divisors (1).

42224461 is an equidigital number, since it uses as much as digits as its factorization.

42224461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3072, while the sum is 25.

The square root of 42224461 is about 6498.0351645709. The cubic root of 42224461 is about 348.2207967064.

Adding to 42224461 its reverse (16442224), we get a palindrome (58666685).

The spelling of 42224461 in words is "forty-two million, two hundred twenty-four thousand, four hundred sixty-one".