2123756 has 12 divisors (see below), whose sum is σ = 3751440. Its totient is φ = 1051920.

The previous prime is 2123753. The next prime is 2123761. The reversal of 2123756 is 6573212.

2123756 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (2123753) 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 3 ways as a sum of consecutive naturals, for example, 2000 + ... + 2871.

It is an arithmetic number, because the mean of its divisors is an integer number (312620).

2^2123756 is an apocalyptic number.

It is an amenable number.

2123756 is a deficient number, since it is larger than the sum of its proper divisors (1627684).

2123756 is a wasteful number, since it uses less digits than its factorization.

2123756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4984 (or 4982 counting only the distinct ones).

The product of its digits is 2520, while the sum is 26.

The square root of 2123756 is about 1457.3112227661. The cubic root of 2123756 is about 128.5389869942.

Adding to 2123756 its reverse (6573212), we get a palindrome (8696968).

The spelling of 2123756 in words is "two million, one hundred twenty-three thousand, seven hundred fifty-six".