421207 has 2 divisors, whose sum is σ = 421208. Its totient is φ = 421206.

The previous prime is 421189. The next prime is 421241. The reversal of 421207 is 702124.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 421207 - 2⁷ = 421079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210603 + 210604.

It is an arithmetic number, because the mean of its divisors is an integer number (210604).

2⁴²¹²⁰⁷ is an apocalyptic number.

421207 is a deficient number, since it is larger than the sum of its proper divisors (1).

421207 is an equidigital number, since it uses as much as digits as its factorization.

421207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 421207 is about 649.0046224797. The cubic root of 421207 is about 74.9603939033.

The spelling of 421207 in words is "four hundred twenty-one thousand, two hundred seven", and thus it is an iban number.