12543435 has 12 divisors (see below), whose sum is σ = 21742032. Its totient is φ = 6689808.

The previous prime is 12543413. The next prime is 12543449. The reversal of 12543435 is 53434521.

12543435 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12543435 - 2²⁰ = 11494859 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12543399 and 12543408.

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, 139327 + ... + 139416.

It is an arithmetic number, because the mean of its divisors is an integer number (1811836).

Almost surely, 2^12543435 is an apocalyptic number.

12543435 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12543435 is a deficient number, since it is larger than the sum of its proper divisors (9198597).

12543435 is a wasteful number, since it uses less digits than its factorization.

12543435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278754 (or 278751 counting only the distinct ones).

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

The square root of 12543435 is about 3541.6712156834. The cubic root of 12543435 is about 232.3479408081.

Adding to 12543435 its reverse (53434521), we get a palindrome (65977956).

The spelling of 12543435 in words is "twelve million, five hundred forty-three thousand, four hundred thirty-five".