2421056 has 56 divisors (see below), whose sum is σ = 5547360. Its totient is φ = 1036800.

The previous prime is 2421053. The next prime is 2421061. The reversal of 2421056 is 6501242.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2421053) 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, 13286 + ... + 13466.

It is an arithmetic number, because the mean of its divisors is an integer number (99060).

2^2421056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2421056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2773680).

2421056 is an abundant number, since it is smaller than the sum of its proper divisors (3126304).

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

2421056 is a wasteful number, since it uses less digits than its factorization.

2421056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223 (or 213 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 2421056 is about 1555.9742928468. The cubic root of 2421056 is about 134.2769944110.

Adding to 2421056 its reverse (6501242), we get a palindrome (8922298).

It can be divided in two parts, 242 and 1056, that multiplied together give a palindrome (255552).

The spelling of 2421056 in words is "two million, four hundred twenty-one thousand, fifty-six".