420263 has 2 divisors, whose sum is σ = 420264. Its totient is φ = 420262.

The previous prime is 420253. The next prime is 420269. The reversal of 420263 is 362024.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 420263 - 2¹² = 416167 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420269) 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, 210131 + 210132.

It is an arithmetic number, because the mean of its divisors is an integer number (210132).

2⁴²⁰²⁶³ is an apocalyptic number.

420263 is a deficient number, since it is larger than the sum of its proper divisors (1).

420263 is an equidigital number, since it uses as much as digits as its factorization.

420263 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 420263 is about 648.2769469910. The cubic root of 420263 is about 74.9043521458.

Adding to 420263 its reverse (362024), we get a palindrome (782287).

The spelling of 420263 in words is "four hundred twenty thousand, two hundred sixty-three".