423671 has 4 divisors (see below), whose sum is σ = 426000. Its totient is φ = 421344.

The previous prime is 423667. The next prime is 423697. The reversal of 423671 is 176324.

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 423671 - 2² = 423667 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423601) 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, 866 + ... + 1263.

It is an arithmetic number, because the mean of its divisors is an integer number (106500).

2⁴²³⁶⁷¹ is an apocalyptic number.

423671 is a deficient number, since it is larger than the sum of its proper divisors (2329).

423671 is a wasteful number, since it uses less digits than its factorization.

423671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2328.

The product of its digits is 1008, while the sum is 23.

The square root of 423671 is about 650.9001459517. The cubic root of 423671 is about 75.1062789556.

Adding to 423671 its reverse (176324), we get a palindrome (599995).

The spelling of 423671 in words is "four hundred twenty-three thousand, six hundred seventy-one".