12543433 has 8 divisors (see below), whose sum is σ = 15178752. Its totient is φ = 10118976.

The previous prime is 12543413. The next prime is 12543449. The reversal of 12543433 is 33434521.

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

It is not a de Polignac number, because 12543433 - 2⁹ = 12542921 is a prime.

It is a super-2 number, since 2×12543433² = 314675422850978, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12543398 and 12543407.

It is not an unprimeable number, because it can be changed into a prime (12543413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52585 + ... + 52822.

It is an arithmetic number, because the mean of its divisors is an integer number (1897344).

Almost surely, 2^12543433 is an apocalyptic number.

It is an amenable number.

12543433 is a deficient number, since it is larger than the sum of its proper divisors (2635319).

12543433 is a wasteful number, since it uses less digits than its factorization.

12543433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105431.

The product of its digits is 4320, while the sum is 25.

The square root of 12543433 is about 3541.6709333308. The cubic root of 12543433 is about 232.3479284591.

Adding to 12543433 its reverse (33434521), we get a palindrome (45977954).

The spelling of 12543433 in words is "twelve million, five hundred forty-three thousand, four hundred thirty-three".