12543039 has 8 divisors (see below), whose sum is σ = 18582320. Its totient is φ = 8362008.

The previous prime is 12542989. The next prime is 12543053. The reversal of 12543039 is 93034521.

12543039 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 12543039 - 2⁷ = 12542911 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 464557 = 12543039 / (1 + 2 + 5 + 4 + 3 + 0 + 3 + 9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12533039) 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, 232252 + ... + 232305.

It is an arithmetic number, because the mean of its divisors is an integer number (2322790).

Almost surely, 2^12543039 is an apocalyptic number.

12543039 is a deficient number, since it is larger than the sum of its proper divisors (6039281).

12543039 is an equidigital number, since it uses as much as digits as its factorization.

12543039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464566 (or 464560 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 12543039 is about 3541.6153094316. The cubic root of 12543039 is about 232.3454956843.

The spelling of 12543039 in words is "twelve million, five hundred forty-three thousand, thirty-nine".