42671 has 4 divisors (see below), whose sum is σ = 43344. Its totient is φ = 42000.

The previous prime is 42667. The next prime is 42677. The reversal of 42671 is 17624.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42671 - 2² = 42667 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 42671.

It is not an unprimeable number, because it can be changed into a prime (42677) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 230 + ... + 371.

It is an arithmetic number, because the mean of its divisors is an integer number (10836).

2⁴²⁶⁷¹ is an apocalyptic number.

42671 is a deficient number, since it is larger than the sum of its proper divisors (673).

42671 is an equidigital number, since it uses as much as digits as its factorization.

42671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672.

The product of its digits is 336, while the sum is 20.

The square root of 42671 is about 206.5696008613. The cubic root of 42671 is about 34.9444015230.

It can be divided in two parts, 42 and 671, that multiplied together give a palindrome (28182).

The spelling of 42671 in words is "forty-two thousand, six hundred seventy-one".