421102422 has 64 divisors (see below), whose sum is σ = 1029288960. Its totient is φ = 126803232.

The previous prime is 421102421. The next prime is 421102441. The reversal of 421102422 is 224201124.

421102422 is a `hidden beast` number, since 421 + 1 + 0 + 242 + 2 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 421102395 and 421102404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421102421) by changing a digit.

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, 26613 + ... + 39375.

It is an arithmetic number, because the mean of its divisors is an integer number (16082640).

Almost surely, 2^421102422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421102422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (514644480).

421102422 is an abundant number, since it is smaller than the sum of its proper divisors (608186538).

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

421102422 is a wasteful number, since it uses less digits than its factorization.

421102422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12834 (or 12828 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 421102422 is about 20520.7802483239. The cubic root of 421102422 is about 749.5418962449.

Adding to 421102422 its reverse (224201124), we get a palindrome (645303546).

The spelling of 421102422 in words is "four hundred twenty-one million, one hundred two thousand, four hundred twenty-two".