421334244 has 96 divisors (see below), whose sum is σ = 1134479360. Its totient is φ = 135115776.

The previous prime is 421334233. The next prime is 421334261. The reversal of 421334244 is 442433124.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

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 31 ways as a sum of consecutive naturals, for example, 387069 + ... + 388155.

Almost surely, 2^421334244 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 421334244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (567239680).

421334244 is an abundant number, since it is smaller than the sum of its proper divisors (713145116).

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

421334244 is a wasteful number, since it uses less digits than its factorization.

421334244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1234 (or 1226 counting only the distinct ones).

The product of its digits is 9216, while the sum is 27.

The square root of 421334244 is about 20526.4279405843. The cubic root of 421334244 is about 749.6794149865.

Adding to 421334244 its reverse (442433124), we get a palindrome (863767368).

The spelling of 421334244 in words is "four hundred twenty-one million, three hundred thirty-four thousand, two hundred forty-four".