42433271 has 2 divisors, whose sum is σ = 42433272. Its totient is φ = 42433270.

The previous prime is 42433253. The next prime is 42433273. The reversal of 42433271 is 17233424.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42433271 is a prime.

Together with 42433273, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42433271.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42433273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21216635 + 21216636.

It is an arithmetic number, because the mean of its divisors is an integer number (21216636).

Almost surely, 2^42433271 is an apocalyptic number.

42433271 is a deficient number, since it is larger than the sum of its proper divisors (1).

42433271 is an equidigital number, since it uses as much as digits as its factorization.

42433271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 26.

The square root of 42433271 is about 6514.0825140614. The cubic root of 42433271 is about 348.7938646367.

Adding to 42433271 its reverse (17233424), we get a palindrome (59666695).

The spelling of 42433271 in words is "forty-two million, four hundred thirty-three thousand, two hundred seventy-one".