2421420 has 24 divisors (see below), whose sum is σ = 6780144. Its totient is φ = 645696.

The previous prime is 2421407. The next prime is 2421421. The reversal of 2421420 is 241242.

2421420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2421420.

It is not an unprimeable number, because it can be changed into a prime (2421421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20119 + ... + 20238.

It is an arithmetic number, because the mean of its divisors is an integer number (282506).

2^2421420 is an apocalyptic number.

2421420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2421420 is an abundant number, since it is smaller than the sum of its proper divisors (4358724).

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

2421420 is a wasteful number, since it uses less digits than its factorization.

2421420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40369 (or 40367 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 2421420 is about 1556.0912569641. The cubic root of 2421420 is about 134.2837234825.

Adding to 2421420 its reverse (241242), we get a palindrome (2662662).

The spelling of 2421420 in words is "two million, four hundred twenty-one thousand, four hundred twenty".