42232271 has 2 divisors, whose sum is σ = 42232272. Its totient is φ = 42232270.

The previous prime is 42232249. The next prime is 42232279. The reversal of 42232271 is 17223224.

It is a happy number.

42232271 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42232271 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42232279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21116135 + 21116136.

It is an arithmetic number, because the mean of its divisors is an integer number (21116136).

Almost surely, 2^42232271 is an apocalyptic number.

42232271 is a deficient number, since it is larger than the sum of its proper divisors (1).

42232271 is an equidigital number, since it uses as much as digits as its factorization.

42232271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1344, while the sum is 23.

The square root of 42232271 is about 6498.6360876726. The cubic root of 42232271 is about 348.2422648057.

Adding to 42232271 its reverse (17223224), we get a palindrome (59455495).

The spelling of 42232271 in words is "forty-two million, two hundred thirty-two thousand, two hundred seventy-one".