421711 has 2 divisors, whose sum is σ = 421712. Its totient is φ = 421710.

The previous prime is 421709. The next prime is 421717. The reversal of 421711 is 117124.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 421711 - 2¹ = 421709 is a prime.

Together with 421709, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210855 + 210856.

It is an arithmetic number, because the mean of its divisors is an integer number (210856).

2⁴²¹⁷¹¹ is an apocalyptic number.

421711 is a deficient number, since it is larger than the sum of its proper divisors (1).

421711 is an equidigital number, since it uses as much as digits as its factorization.

421711 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56, while the sum is 16.

The square root of 421711 is about 649.3927933077. The cubic root of 421711 is about 74.9902802219.

Adding to 421711 its reverse (117124), we get a palindrome (538835).

The spelling of 421711 in words is "four hundred twenty-one thousand, seven hundred eleven", and thus it is an iban number.