2120056 has 8 divisors (see below), whose sum is σ = 3975120. Its totient is φ = 1060024.

The previous prime is 2120051. The next prime is 2120057. The reversal of 2120056 is 6500212.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132496 + ... + 132511.

It is an arithmetic number, because the mean of its divisors is an integer number (496890).

2^2120056 is an apocalyptic number.

It is an amenable number.

2120056 is a deficient number, since it is larger than the sum of its proper divisors (1855064).

2120056 is a wasteful number, since it uses less digits than its factorization.

2120056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265013 (or 265009 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 2120056 is about 1456.0412082081. The cubic root of 2120056 is about 128.4642968835.

Subtracting from 2120056 its product of nonzero digits (120), we obtain a square (2119936 = 1456²).

Adding to 2120056 its reverse (6500212), we get a palindrome (8620268).

The spelling of 2120056 in words is "two million, one hundred twenty thousand, fifty-six".