12543434 has 8 divisors (see below), whose sum is σ = 18832800. Its totient is φ = 6265836.

The previous prime is 12543413. The next prime is 12543449. The reversal of 12543434 is 43434521.

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

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 557 + ... + 5039.

It is an arithmetic number, because the mean of its divisors is an integer number (2354100).

Almost surely, 2^12543434 is an apocalyptic number.

12543434 is a deficient number, since it is larger than the sum of its proper divisors (6289366).

12543434 is a wasteful number, since it uses less digits than its factorization.

12543434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5884.

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

The square root of 12543434 is about 3541.6710745071. The cubic root of 12543434 is about 232.3479346336.

Adding to 12543434 its reverse (43434521), we get a palindrome (55977955).

The spelling of 12543434 in words is "twelve million, five hundred forty-three thousand, four hundred thirty-four".