420307 has 2 divisors, whose sum is σ = 420308. Its totient is φ = 420306.

The previous prime is 420293. The next prime is 420313. The reversal of 420307 is 703024.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 420307 - 2¹¹ = 418259 is a prime.

It is not a weakly prime, because it can be changed into another prime (420317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210153 + 210154.

It is an arithmetic number, because the mean of its divisors is an integer number (210154).

2⁴²⁰³⁰⁷ is an apocalyptic number.

420307 is a deficient number, since it is larger than the sum of its proper divisors (1).

420307 is an equidigital number, since it uses as much as digits as its factorization.

420307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168, while the sum is 16.

The square root of 420307 is about 648.3108822162. The cubic root of 420307 is about 74.9069661252.

It can be divided in two parts, 420 and 307, that added together give a palindrome (727).

The spelling of 420307 in words is "four hundred twenty thousand, three hundred seven", and thus it is an iban number.