42071 has 2 divisors, whose sum is σ = 42072. Its totient is φ = 42070.

The previous prime is 42061. The next prime is 42073. The reversal of 42071 is 17024.

It is a happy number.

42071 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 not a de Polignac number, because 42071 - 2¹⁰ = 41047 is a prime.

It is a Sophie Germain prime.

Together with 42073, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21035 + 21036.

It is an arithmetic number, because the mean of its divisors is an integer number (21036).

2⁴²⁰⁷¹ is an apocalyptic number.

42071 is a deficient number, since it is larger than the sum of its proper divisors (1).

42071 is an equidigital number, since it uses as much as digits as its factorization.

42071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56, while the sum is 14.

The square root of 42071 is about 205.1121644369. The cubic root of 42071 is about 34.7798425563.

Adding to 42071 its reverse (17024), we get a palindrome (59095).

The spelling of 42071 in words is "forty-two thousand, seventy-one", and thus it is an iban number.