421324307 has 2 divisors, whose sum is σ = 421324308. Its totient is φ = 421324306.

The previous prime is 421324289. The next prime is 421324357. The reversal of 421324307 is 703423124.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 421324307 - 2²⁶ = 354215443 is a prime.

It is not a weakly prime, because it can be changed into another prime (421324357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210662153 + 210662154.

It is an arithmetic number, because the mean of its divisors is an integer number (210662154).

Almost surely, 2^421324307 is an apocalyptic number.

421324307 is a deficient number, since it is larger than the sum of its proper divisors (1).

421324307 is an equidigital number, since it uses as much as digits as its factorization.

421324307 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 421324307 is about 20526.1858853514. The cubic root of 421324307 is about 749.6735213102.

The spelling of 421324307 in words is "four hundred twenty-one million, three hundred twenty-four thousand, three hundred seven".