8421067 has 2 divisors, whose sum is σ = 8421068. Its totient is φ = 8421066.

The previous prime is 8421041. The next prime is 8421071. The reversal of 8421067 is 7601248.

8421067 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8421067 - 2⁷ = 8420939 is a prime.

8421067 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (8421167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4210533 + 4210534.

It is an arithmetic number, because the mean of its divisors is an integer number (4210534).

Almost surely, 2^8421067 is an apocalyptic number.

8421067 is a deficient number, since it is larger than the sum of its proper divisors (1).

8421067 is an equidigital number, since it uses as much as digits as its factorization.

8421067 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 8421067 is about 2901.9074761267. The cubic root of 8421067 is about 203.4490693497.

The spelling of 8421067 in words is "eight million, four hundred twenty-one thousand, sixty-seven".