2543123 has 8 divisors (see below), whose sum is σ = 2833920. Its totient is φ = 2262280.

The previous prime is 2543117. The next prime is 2543129. The reversal of 2543123 is 3213452.

It is a happy number.

2543123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2543117) and next prime (2543129).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2543123 - 2⁶ = 2543059 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2543095 and 2543104.

It is not an unprimeable number, because it can be changed into a prime (2543129) 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 7 ways as a sum of consecutive naturals, for example, 1943 + ... + 2976.

It is an arithmetic number, because the mean of its divisors is an integer number (354240).

2^2543123 is an apocalyptic number.

2543123 is a deficient number, since it is larger than the sum of its proper divisors (290797).

2543123 is a wasteful number, since it uses less digits than its factorization.

2543123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4977.

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

The square root of 2543123 is about 1594.7172163114. The cubic root of 2543123 is about 136.4967953556.

Adding to 2543123 its reverse (3213452), we get a palindrome (5756575).

The spelling of 2543123 in words is "two million, five hundred forty-three thousand, one hundred twenty-three".