2124456 has 64 divisors (see below), whose sum is σ = 5806080. Its totient is φ = 645120.

The previous prime is 2124449. The next prime is 2124457. The reversal of 2124456 is 6544212.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a d-powerful number, because it can be written as 2 + 1 + 2²¹ + 4² + 4⁷ + 5⁵ + 6⁵ .

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (2124457) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16665 + ... + 16791.

It is an arithmetic number, because the mean of its divisors is an integer number (90720).

2^2124456 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 2124456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2903040).

2124456 is an abundant number, since it is smaller than the sum of its proper divisors (3681624).

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

2124456 is a wasteful number, since it uses less digits than its factorization.

2124456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194 (or 190 counting only the distinct ones).

The product of its digits is 1920, while the sum is 24.

The square root of 2124456 is about 1457.5513713074. The cubic root of 2124456 is about 128.5531077952.

Adding to 2124456 its reverse (6544212), we get a palindrome (8668668).

The spelling of 2124456 in words is "two million, one hundred twenty-four thousand, four hundred fifty-six".