420224512 has 40 divisors (see below), whose sum is σ = 842943816. Its totient is φ = 209283072.

The previous prime is 420224489. The next prime is 420224521. The reversal of 420224512 is 215422024.

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, 140343 + ... + 143305.

Almost surely, 2^420224512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 420224512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (421471908).

420224512 is an abundant number, since it is smaller than the sum of its proper divisors (422719304).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420224512 is an equidigital number, since it uses as much as digits as its factorization.

420224512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3258 (or 3242 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 420224512 is about 20499.3783320373. The cubic root of 420224512 is about 749.0206547709.

Adding to 420224512 its reverse (215422024), we get a palindrome (635646536).

The spelling of 420224512 in words is "four hundred twenty million, two hundred twenty-four thousand, five hundred twelve".