420002224 has 20 divisors (see below), whose sum is σ = 816070536. Its totient is φ = 209403392.

The previous prime is 420002213. The next prime is 420002267. The reversal of 420002224 is 422200024.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 420002198 and 420002207.

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, 31534 + ... + 42829.

Almost surely, 2^420002224 is an apocalyptic number.

It is an amenable number.

420002224 is a deficient number, since it is larger than the sum of its proper divisors (396068312).

420002224 is a wasteful number, since it uses less digits than its factorization.

420002224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74724 (or 74718 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 420002224 is about 20493.9557918914. The cubic root of 420002224 is about 748.8885605649. Note that the first 3 decimals are identical.

Adding to 420002224 its reverse (422200024), we get a palindrome (842202248).

The spelling of 420002224 in words is "four hundred twenty million, two thousand, two hundred twenty-four".