12543734 has 16 divisors (see below), whose sum is σ = 21620736. Its totient is φ = 5346600.

The previous prime is 12543733. The next prime is 12543757. The reversal of 12543734 is 43734521.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12543697 and 12543706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12543733) 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, 329 + ... + 5019.

It is an arithmetic number, because the mean of its divisors is an integer number (1351296).

Almost surely, 2^12543734 is an apocalyptic number.

12543734 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12543734 is a deficient number, since it is larger than the sum of its proper divisors (9077002).

12543734 is a wasteful number, since it uses less digits than its factorization.

12543734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4891.

The product of its digits is 10080, while the sum is 29.

The square root of 12543734 is about 3541.7134271423. The cubic root of 12543734 is about 232.3497869659.

The spelling of 12543734 in words is "twelve million, five hundred forty-three thousand, seven hundred thirty-four".