421304267 has 2 divisors, whose sum is σ = 421304268. Its totient is φ = 421304266.

The previous prime is 421304231. The next prime is 421304269. The reversal of 421304267 is 762403124.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 421304267 - 2⁸ = 421304011 is a prime.

Together with 421304269, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (421304269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210652133 + 210652134.

It is an arithmetic number, because the mean of its divisors is an integer number (210652134).

Almost surely, 2^421304267 is an apocalyptic number.

421304267 is a deficient number, since it is larger than the sum of its proper divisors (1).

421304267 is an equidigital number, since it uses as much as digits as its factorization.

421304267 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 421304267 is about 20525.6977226110. The cubic root of 421304267 is about 749.6616352205.

The spelling of 421304267 in words is "four hundred twenty-one million, three hundred four thousand, two hundred sixty-seven".