420090263 has 4 divisors (see below), whose sum is σ = 429859848. Its totient is φ = 410320680.

The previous prime is 420090241. The next prime is 420090289. The reversal of 420090263 is 362090024.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 420090263 - 2¹⁸ = 419828119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420090763) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4884728 + ... + 4884813.

It is an arithmetic number, because the mean of its divisors is an integer number (107464962).

Almost surely, 2^420090263 is an apocalyptic number.

420090263 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

420090263 is a deficient number, since it is larger than the sum of its proper divisors (9769585).

420090263 is an equidigital number, since it uses as much as digits as its factorization.

420090263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9769584.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 420090263 is about 20496.1036053197. The cubic root of 420090263 is about 748.9408831401.

The spelling of 420090263 in words is "four hundred twenty million, ninety thousand, two hundred sixty-three".