421741 has 2 divisors, whose sum is σ = 421742. Its totient is φ = 421740.

The previous prime is 421739. The next prime is 421783. The reversal of 421741 is 147124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 385641 + 36100 = 621^2 + 190^2 .

It is a cyclic number.

It is not a de Polignac number, because 421741 - 2¹ = 421739 is a prime.

Together with 421739, 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 (421711) 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, 210870 + 210871.

It is an arithmetic number, because the mean of its divisors is an integer number (210871).

2⁴²¹⁷⁴¹ is an apocalyptic number.

It is an amenable number.

421741 is a deficient number, since it is larger than the sum of its proper divisors (1).

421741 is an equidigital number, since it uses as much as digits as its factorization.

421741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 224, while the sum is 19.

The square root of 421741 is about 649.4158913978. The cubic root of 421741 is about 74.9920584184.

Adding to 421741 its reverse (147124), we get a palindrome (568865).

The spelling of 421741 in words is "four hundred twenty-one thousand, seven hundred forty-one", and thus it is an iban number.