421424322 has 64 divisors (see below), whose sum is σ = 997411968. Its totient is φ = 117248000.

The previous prime is 421424321. The next prime is 421424327. The reversal of 421424322 is 223424124.

It is a junction number, because it is equal to n+sod(n) for n = 421424292 and 421424301.

It is not an unprimeable number, because it can be changed into a prime (421424321) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41422 + ... + 50582.

It is an arithmetic number, because the mean of its divisors is an integer number (15584562).

Almost surely, 2^421424322 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421424322, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (498705984).

421424322 is an abundant number, since it is smaller than the sum of its proper divisors (575987646).

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

421424322 is a wasteful number, since it uses less digits than its factorization.

421424322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9235.

The product of its digits is 3072, while the sum is 24.

The square root of 421424322 is about 20528.6220190250. The cubic root of 421424322 is about 749.7328363983.

Adding to 421424322 its reverse (223424124), we get a palindrome (644848446).

It can be divided in two parts, 42142 and 4322, that added together give a palindrome (46464).

The spelling of 421424322 in words is "four hundred twenty-one million, four hundred twenty-four thousand, three hundred twenty-two".