424805 has 4 divisors (see below), whose sum is σ = 509772. Its totient is φ = 339840.

The previous prime is 424777. The next prime is 424811. The reversal of 424805 is 508424.

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

It can be written as a sum of positive squares in 2 ways, for example, as 229441 + 195364 = 479^2 + 442^2 .

It is not a de Polignac number, because 424805 - 2⁸ = 424549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42476 + ... + 42485.

It is an arithmetic number, because the mean of its divisors is an integer number (127443).

2⁴²⁴⁸⁰⁵ is an apocalyptic number.

It is an amenable number.

424805 is a deficient number, since it is larger than the sum of its proper divisors (84967).

424805 is an equidigital number, since it uses as much as digits as its factorization.

424805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84966.

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 424805 is about 651.7706651883. The cubic root of 424805 is about 75.1732292101.

The spelling of 424805 in words is "four hundred twenty-four thousand, eight hundred five".