2123453 has 4 divisors (see below), whose sum is σ = 2248380. Its totient is φ = 1998528.

The previous prime is 2123423. The next prime is 2123461. The reversal of 2123453 is 3543212.

It is a happy number.

2123453 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 770884 + 1352569 = 878^2 + 1163^2 .

It is a cyclic number.

It is not a de Polignac number, because 2123453 - 2¹⁴ = 2107069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123423) 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, 62438 + ... + 62471.

It is an arithmetic number, because the mean of its divisors is an integer number (562095).

2^2123453 is an apocalyptic number.

It is an amenable number.

2123453 is a deficient number, since it is larger than the sum of its proper divisors (124927).

2123453 is a wasteful number, since it uses less digits than its factorization.

2123453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124926.

The product of its digits is 720, while the sum is 20.

The square root of 2123453 is about 1457.2072604815. The cubic root of 2123453 is about 128.5328737424.

Adding to 2123453 its reverse (3543212), we get a palindrome (5666665).

The spelling of 2123453 in words is "two million, one hundred twenty-three thousand, four hundred fifty-three".