421241440 has 24 divisors (see below), whose sum is σ = 995183280. Its totient is φ = 168496512.

The previous prime is 421241413. The next prime is 421241441. The reversal of 421241440 is 44142124.

It is a super-3 number, since 3×421241440³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421241441) 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, 1316220 + ... + 1316539.

It is an arithmetic number, because the mean of its divisors is an integer number (41465970).

Almost surely, 2^421241440 is an apocalyptic number.

421241440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

421241440 is an abundant number, since it is smaller than the sum of its proper divisors (573941840).

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

421241440 is a wasteful number, since it uses less digits than its factorization.

421241440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2632774 (or 2632766 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

The square root of 421241440 is about 20524.1672181845. The cubic root of 421241440 is about 749.6243689369.

Adding to 421241440 its reverse (44142124), we get a palindrome (465383564).

The spelling of 421241440 in words is "four hundred twenty-one million, two hundred forty-one thousand, four hundred forty".