12434543 has 4 divisors (see below), whose sum is σ = 13564968. Its totient is φ = 11304120.

The previous prime is 12434537. The next prime is 12434549. The reversal of 12434543 is 34543421.

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

It is an interprime number because it is at equal distance from previous prime (12434537) and next prime (12434549).

It is a cyclic number.

It is not a de Polignac number, because 12434543 - 2⁸ = 12434287 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 (12434549) 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 3 ways as a sum of consecutive naturals, for example, 565196 + ... + 565217.

It is an arithmetic number, because the mean of its divisors is an integer number (3391242).

Almost surely, 2^12434543 is an apocalyptic number.

12434543 is a deficient number, since it is larger than the sum of its proper divisors (1130425).

12434543 is a wasteful number, since it uses less digits than its factorization.

12434543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1130424.

The product of its digits is 5760, while the sum is 26.

The square root of 12434543 is about 3526.2647376509. The cubic root of 12434543 is about 231.6736332003.

Adding to 12434543 its reverse (34543421), we get a palindrome (46977964).

The spelling of 12434543 in words is "twelve million, four hundred thirty-four thousand, five hundred forty-three".