423221200 has 120 divisors (see below), whose sum is σ = 1079395200. Its totient is φ = 159022080.

The previous prime is 423221191. The next prime is 423221221. The reversal of 423221200 is 2122324.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1770681 + ... + 1770919.

It is an arithmetic number, because the mean of its divisors is an integer number (8994960).

Almost surely, 2^423221200 is an apocalyptic number.

423221200 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 423221200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (539697600).

423221200 is an abundant number, since it is smaller than the sum of its proper divisors (656174000).

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

423221200 is a wasteful number, since it uses less digits than its factorization.

423221200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509 (or 498 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 423221200 is about 20572.3406543835. The cubic root of 423221200 is about 750.7969011131.

Adding to 423221200 its reverse (2122324), we get a palindrome (425343524).

The spelling of 423221200 in words is "four hundred twenty-three million, two hundred twenty-one thousand, two hundred".