420203504 has 80 divisors (see below), whose sum is σ = 981097920. Its totient is φ = 170526720.

The previous prime is 420203479. The next prime is 420203579. The reversal of 420203504 is 405302024.

It is a congruent number.

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, 170924 + ... + 173364.

It is an arithmetic number, because the mean of its divisors is an integer number (12263724).

Almost surely, 2^420203504 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 420203504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (490548960).

420203504 is an abundant number, since it is smaller than the sum of its proper divisors (560894416).

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

420203504 is a wasteful number, since it uses less digits than its factorization.

420203504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2538 (or 2532 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 420203504 is about 20498.8659198503. The cubic root of 420203504 is about 749.0081728018.

Adding to 420203504 its reverse (405302024), we get a palindrome (825505528).

The spelling of 420203504 in words is "four hundred twenty million, two hundred three thousand, five hundred four".