12342543 has 8 divisors (see below), whose sum is σ = 16542768. Its totient is φ = 8185344.

The previous prime is 12342541. The next prime is 12342553. The reversal of 12342543 is 34524321.

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

It is not a de Polignac number, because 12342543 - 2¹ = 12342541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12342541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10080 + ... + 11237.

It is an arithmetic number, because the mean of its divisors is an integer number (2067846).

Almost surely, 2^12342543 is an apocalyptic number.

12342543 is a deficient number, since it is larger than the sum of its proper divisors (4200225).

12342543 is a wasteful number, since it uses less digits than its factorization.

12342543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21513.

The product of its digits is 2880, while the sum is 24.

The square root of 12342543 is about 3513.1955539082. The cubic root of 12342543 is about 231.1008536207.

Adding to 12342543 its reverse (34524321), we get a palindrome (46866864).

The spelling of 12342543 in words is "twelve million, three hundred forty-two thousand, five hundred forty-three".