420321244 has 24 divisors (see below), whose sum is σ = 869631840. Its totient is φ = 173925696.

The previous prime is 420321203. The next prime is 420321247. The reversal of 420321244 is 442123024.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420321247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 258007 + ... + 259630.

It is an arithmetic number, because the mean of its divisors is an integer number (36234660).

Almost surely, 2^420321244 is an apocalyptic number.

It is an amenable number.

420321244 is an abundant number, since it is smaller than the sum of its proper divisors (449310596).

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

420321244 is a wasteful number, since it uses less digits than its factorization.

420321244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517677 (or 517675 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 420321244 is about 20501.7375848975. The cubic root of 420321244 is about 749.0781230251.

Adding to 420321244 its reverse (442123024), we get a palindrome (862444268).

The spelling of 420321244 in words is "four hundred twenty million, three hundred twenty-one thousand, two hundred forty-four".