421713 has 8 divisors (see below), whose sum is σ = 624800. Its totient is φ = 281124.

The previous prime is 421711. The next prime is 421717. The reversal of 421713 is 317124.

It is not a de Polignac number, because 421713 - 2¹ = 421711 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421711) 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 in 7 ways as a sum of consecutive naturals, for example, 7783 + ... + 7836.

It is an arithmetic number, because the mean of its divisors is an integer number (78100).

2⁴²¹⁷¹³ is an apocalyptic number.

It is an amenable number.

421713 is a deficient number, since it is larger than the sum of its proper divisors (203087).

421713 is a wasteful number, since it uses less digits than its factorization.

421713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15628 (or 15622 counting only the distinct ones).

The product of its digits is 168, while the sum is 18.

The square root of 421713 is about 649.3943332059. The cubic root of 421713 is about 74.9903987709.

Adding to 421713 its reverse (317124), we get a palindrome (738837).

The spelling of 421713 in words is "four hundred twenty-one thousand, seven hundred thirteen".