123340543 has 8 divisors (see below), whose sum is σ = 124768800. Its totient is φ = 121916928.

The previous prime is 123340531. The next prime is 123340577. The reversal of 123340543 is 345043321.

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 123340543 - 2²⁵ = 89786111 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 (123340583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95043 + ... + 96331.

It is an arithmetic number, because the mean of its divisors is an integer number (15596100).

Almost surely, 2^123340543 is an apocalyptic number.

123340543 is a deficient number, since it is larger than the sum of its proper divisors (1428257).

123340543 is a wasteful number, since it uses less digits than its factorization.

123340543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2321.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 123340543 is about 11105.8787585675. The cubic root of 123340543 is about 497.7775265269. Note that the first 3 decimals are identical.

Adding to 123340543 its reverse (345043321), we get a palindrome (468383864).

The spelling of 123340543 in words is "one hundred twenty-three million, three hundred forty thousand, five hundred forty-three".