421241 has 2 divisors, whose sum is σ = 421242. Its totient is φ = 421240.

The previous prime is 421207. The next prime is 421273. The reversal of 421241 is 142124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 395641 + 25600 = 629^2 + 160^2 .

It is a cyclic number.

It is not a de Polignac number, because 421241 - 2⁶ = 421177 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (421741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210620 + 210621.

It is an arithmetic number, because the mean of its divisors is an integer number (210621).

2⁴²¹²⁴¹ is an apocalyptic number.

It is an amenable number.

421241 is a deficient number, since it is larger than the sum of its proper divisors (1).

421241 is an equidigital number, since it uses as much as digits as its factorization.

421241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64, while the sum is 14.

The square root of 421241 is about 649.0308159094. The cubic root of 421241 is about 74.9624107935.

Adding to 421241 its reverse (142124), we get a palindrome (563365).

The spelling of 421241 in words is "four hundred twenty-one thousand, two hundred forty-one", and thus it is an iban number.