420331232 has 48 divisors (see below), whose sum is σ = 859307904. Its totient is φ = 202176000.

The previous prime is 420331213. The next prime is 420331237. The reversal of 420331232 is 232133024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420331237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 178382 + ... + 180722.

It is an arithmetic number, because the mean of its divisors is an integer number (17902248).

Almost surely, 2^420331232 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 420331232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (429653952).

420331232 is an abundant number, since it is smaller than the sum of its proper divisors (438976672).

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

420331232 is a wasteful number, since it uses less digits than its factorization.

420331232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2563 (or 2555 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 420331232 is about 20501.9811725599. The cubic root of 420331232 is about 749.0840563702.

Adding to 420331232 its reverse (232133024), we get a palindrome (652464256).

The spelling of 420331232 in words is "four hundred twenty million, three hundred thirty-one thousand, two hundred thirty-two".