12543065 has 8 divisors (see below), whose sum is σ = 15537408. Its totient is φ = 9710640.

The previous prime is 12543061. The next prime is 12543071. The reversal of 12543065 is 56034521.

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

It is not a de Polignac number, because 12543065 - 2² = 12543061 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12543061) 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, 40307 + ... + 40616.

It is an arithmetic number, because the mean of its divisors is an integer number (1942176).

Almost surely, 2^12543065 is an apocalyptic number.

It is an amenable number.

12543065 is a deficient number, since it is larger than the sum of its proper divisors (2994343).

12543065 is an equidigital number, since it uses as much as digits as its factorization.

12543065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80959.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 12543065 is about 3541.6189800711. The cubic root of 12543065 is about 232.3456562243.

Adding to 12543065 its reverse (56034521), we get a palindrome (68577586).

The spelling of 12543065 in words is "twelve million, five hundred forty-three thousand, sixty-five".