420465259 has 2 divisors, whose sum is σ = 420465260. Its totient is φ = 420465258.

The previous prime is 420465257. The next prime is 420465263. The reversal of 420465259 is 952564024.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 420465259 - 2¹ = 420465257 is a prime.

Together with 420465257, it forms a pair of twin primes.

It is equal to p_22367872 and since 420465259 and 22367872 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (420465251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210232629 + 210232630.

It is an arithmetic number, because the mean of its divisors is an integer number (210232630).

Almost surely, 2^420465259 is an apocalyptic number.

420465259 is a deficient number, since it is larger than the sum of its proper divisors (1).

420465259 is an equidigital number, since it uses as much as digits as its factorization.

420465259 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86400, while the sum is 37.

The square root of 420465259 is about 20505.2495473720. The cubic root of 420465259 is about 749.1636656658.

The spelling of 420465259 in words is "four hundred twenty million, four hundred sixty-five thousand, two hundred fifty-nine".