2123245 has 16 divisors (see below), whose sum is σ = 2736000. Its totient is φ = 1577664.

The previous prime is 2123243. The next prime is 2123257. The reversal of 2123245 is 5423212.

2123245 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 2123245 - 2¹ = 2123243 is a prime.

It is a d-powerful number, because it can be written as 2⁸ + 1 + 2¹² + 3¹³ + 2¹⁹ + 4⁴ + 5² .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123243) 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 15 ways as a sum of consecutive naturals, for example, 4006 + ... + 4504.

It is an arithmetic number, because the mean of its divisors is an integer number (171000).

2^2123245 is an apocalyptic number.

It is an amenable number.

2123245 is a deficient number, since it is larger than the sum of its proper divisors (612755).

2123245 is a wasteful number, since it uses less digits than its factorization.

2123245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564.

The product of its digits is 480, while the sum is 19.

The square root of 2123245 is about 1457.1358893391. The cubic root of 2123245 is about 128.5286768501.

Adding to 2123245 its reverse (5423212), we get a palindrome (7546457).

The spelling of 2123245 in words is "two million, one hundred twenty-three thousand, two hundred forty-five".