2122506 has 12 divisors (see below), whose sum is σ = 4598802. Its totient is φ = 707496.

The previous prime is 2122499. The next prime is 2122507. The reversal of 2122506 is 6052212.

It can be written as a sum of positive squares in only one way, i.e., 1846881 + 275625 = 1359^2 + 525^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 117917 = 2122506 / (2 + 1 + 2 + 2 + 5 + 0 + 6).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2122507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 58941 + ... + 58976.

2^2122506 is an apocalyptic number.

2122506 is an abundant number, since it is smaller than the sum of its proper divisors (2476296).

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

2122506 is a wasteful number, since it uses less digits than its factorization.

2122506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117925 (or 117922 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 2122506 is about 1456.8822876266. The cubic root of 2122506 is about 128.5137635588.

Adding to 2122506 its reverse (6052212), we get a palindrome (8174718).

It can be divided in two parts, 2122 and 506, that added together give a triangular number (2628 = T₇₂).

The spelling of 2122506 in words is "two million, one hundred twenty-two thousand, five hundred six".