42541271 has 2 divisors, whose sum is σ = 42541272. Its totient is φ = 42541270.

The previous prime is 42541267. The next prime is 42541273. The reversal of 42541271 is 17214524.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42541271 - 2² = 42541267 is a prime.

Together with 42541273, 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 42541271.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42541273) 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, 21270635 + 21270636.

It is an arithmetic number, because the mean of its divisors is an integer number (21270636).

Almost surely, 2^42541271 is an apocalyptic number.

42541271 is a deficient number, since it is larger than the sum of its proper divisors (1).

42541271 is an equidigital number, since it uses as much as digits as its factorization.

42541271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2240, while the sum is 26.

The square root of 42541271 is about 6522.3669783293. The cubic root of 42541271 is about 349.0895274735.

Adding to 42541271 its reverse (17214524), we get a palindrome (59755795).

The spelling of 42541271 in words is "forty-two million, five hundred forty-one thousand, two hundred seventy-one".