421240412224 has 28 divisors (see below), whose sum is σ = 864723048300. Its totient is φ = 203357439488.

The previous prime is 421240412207. The next prime is 421240412227. The reversal of 421240412224 is 422214042124.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 298902758400 + 122337653824 = 546720^2 + 349768^2 .

It is a junction number, because it is equal to n+sod(n) for n = 421240412192 and 421240412201.

It is not an unprimeable number, because it can be changed into a prime (421240412227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113478859 + ... + 113482570.

Almost surely, 2^421240412224 is an apocalyptic number.

It is an amenable number.

421240412224 is an abundant number, since it is smaller than the sum of its proper divisors (443482636076).

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

421240412224 is a wasteful number, since it uses less digits than its factorization.

421240412224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226961470 (or 226961460 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 28.

Adding to 421240412224 its reverse (422214042124), we get a palindrome (843454454348).

The spelling of 421240412224 in words is "four hundred twenty-one billion, two hundred forty million, four hundred twelve thousand, two hundred twenty-four".