12543534 has 24 divisors (see below), whose sum is σ = 28608840. Its totient is φ = 3961008.

The previous prime is 12543529. The next prime is 12543551. The reversal of 12543534 is 43534521.

12543534 is a `hidden beast` number, since 125 + 4 + 3 + 534 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 12543498 and 12543507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17997 + ... + 18680.

It is an arithmetic number, because the mean of its divisors is an integer number (1192035).

Almost surely, 2^12543534 is an apocalyptic number.

12543534 is an abundant number, since it is smaller than the sum of its proper divisors (16065306).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12543534 is a wasteful number, since it uses less digits than its factorization.

12543534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36704 (or 36701 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 12543534 is about 3541.6851921084. The cubic root of 12543534 is about 232.3485520810.

The spelling of 12543534 in words is "twelve million, five hundred forty-three thousand, five hundred thirty-four".