420224305 has 16 divisors (see below), whose sum is σ = 511948800. Its totient is φ = 331081920.

The previous prime is 420224263. The next prime is 420224317. The reversal of 420224305 is 503422024.

It is not a de Polignac number, because 420224305 - 2¹⁵ = 420191537 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 188095 + ... + 190315.

It is an arithmetic number, because the mean of its divisors is an integer number (31996800).

Almost surely, 2^420224305 is an apocalyptic number.

It is an amenable number.

420224305 is a deficient number, since it is larger than the sum of its proper divisors (91724495).

420224305 is a wasteful number, since it uses less digits than its factorization.

420224305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2784.

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 420224305 is about 20499.3732831031. The cubic root of 420224305 is about 749.0205317832.

Adding to 420224305 its reverse (503422024), we get a palindrome (923646329).

The spelling of 420224305 in words is "four hundred twenty million, two hundred twenty-four thousand, three hundred five".