442522237 has 2 divisors, whose sum is σ = 442522238. Its totient is φ = 442522236.

The previous prime is 442522187. The next prime is 442522259. The reversal of 442522237 is 732225244.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 396567396 + 45954841 = 19914^2 + 6779^2 .

It is a cyclic number.

It is not a de Polignac number, because 442522237 - 2¹⁵ = 442489469 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 442522199 and 442522208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442522537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221261118 + 221261119.

It is an arithmetic number, because the mean of its divisors is an integer number (221261119).

Almost surely, 2^442522237 is an apocalyptic number.

It is an amenable number.

442522237 is a deficient number, since it is larger than the sum of its proper divisors (1).

442522237 is an equidigital number, since it uses as much as digits as its factorization.

442522237 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26880, while the sum is 31.

The square root of 442522237 is about 21036.2125155647. The cubic root of 442522237 is about 762.0410493337.

It can be divided in two parts, 4425 and 22237, that added together give a palindrome (26662).

The spelling of 442522237 in words is "four hundred forty-two million, five hundred twenty-two thousand, two hundred thirty-seven".