12543042439 has 8 divisors (see below), whose sum is σ = 13009592448. Its totient is φ = 12083205600.

The previous prime is 12543042403. The next prime is 12543042443. The reversal of 12543042439 is 93424034521.

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

It is a cyclic number.

It is not a de Polignac number, because 12543042439 - 2¹³ = 12543034247 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12543042398 and 12543042407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12543042469) 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, 1674487 + ... + 1681960.

It is an arithmetic number, because the mean of its divisors is an integer number (1626199056).

Almost surely, 2^12543042439 is an apocalyptic number.

12543042439 is a deficient number, since it is larger than the sum of its proper divisors (466550009).

12543042439 is a wasteful number, since it uses less digits than its factorization.

12543042439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3356585.

The product of its (nonzero) digits is 103680, while the sum is 37.

The spelling of 12543042439 in words is "twelve billion, five hundred forty-three million, forty-two thousand, four hundred thirty-nine".