420122232 has 96 divisors (see below), whose sum is σ = 1198903680. Its totient is φ = 132644160.

The previous prime is 420122221. The next prime is 420122267. The reversal of 420122232 is 232221024.

420122232 is a `hidden beast` number, since 420 + 12 + 2 + 232 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 176007 + ... + 178377.

It is an arithmetic number, because the mean of its divisors is an integer number (12488580).

Almost surely, 2^420122232 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 420122232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (599451840).

420122232 is an abundant number, since it is smaller than the sum of its proper divisors (778781448).

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

420122232 is a wasteful number, since it uses less digits than its factorization.

420122232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2513 (or 2506 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 420122232 is about 20496.8834704206. The cubic root of 420122232 is about 748.9598808697.

Adding to 420122232 its reverse (232221024), we get a palindrome (652343256).

It can be divided in two parts, 42012 and 2232, that added together give a palindrome (44244).

The spelling of 420122232 in words is "four hundred twenty million, one hundred twenty-two thousand, two hundred thirty-two".