421727 has 2 divisors, whose sum is σ = 421728. Its totient is φ = 421726.

The previous prime is 421717. The next prime is 421739. The reversal of 421727 is 727124.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 421727 - 2⁴ = 421711 is a prime.

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 polite number, since it can be written as a sum of consecutive naturals, namely, 210863 + 210864.

It is an arithmetic number, because the mean of its divisors is an integer number (210864).

2⁴²¹⁷²⁷ is an apocalyptic number.

421727 is a deficient number, since it is larger than the sum of its proper divisors (1).

421727 is an equidigital number, since it uses as much as digits as its factorization.

421727 is an evil number, because the sum of its binary digits is even.

The product of its digits is 784, while the sum is 23.

The square root of 421727 is about 649.4051123913. The cubic root of 421727 is about 74.9912286038.

The spelling of 421727 in words is "four hundred twenty-one thousand, seven hundred twenty-seven", and thus it is an iban number.