2543243 has 8 divisors (see below), whose sum is σ = 2601312. Its totient is φ = 2486016.

The previous prime is 2543239. The next prime is 2543249. The reversal of 2543243 is 3423452.

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 2543243 - 2² = 2543239 is a prime.

It is a d-powerful number, because it can be written as 2⁹ + 5 + 4⁶ + 3⁷ + 2²¹ + 4⁹ + 3¹¹ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2543249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15146 + ... + 15312.

It is an arithmetic number, because the mean of its divisors is an integer number (325164).

2^2543243 is an apocalyptic number.

2543243 is a deficient number, since it is larger than the sum of its proper divisors (58069).

2543243 is a wasteful number, since it uses less digits than its factorization.

2543243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421.

The product of its digits is 2880, while the sum is 23.

The square root of 2543243 is about 1594.7548400930. The cubic root of 2543243 is about 136.4989422380.

Adding to 2543243 its reverse (3423452), we get a palindrome (5966695).

The spelling of 2543243 in words is "two million, five hundred forty-three thousand, two hundred forty-three".