12387143 has 8 divisors (see below), whose sum is σ = 12555312. Its totient is φ = 12220416.

The previous prime is 12387127. The next prime is 12387149. The reversal of 12387143 is 34178321.

12387143 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12387143 - 2⁴ = 12387127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12387149) 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, 40196 + ... + 40502.

It is an arithmetic number, because the mean of its divisors is an integer number (1569414).

Almost surely, 2^12387143 is an apocalyptic number.

12387143 is a deficient number, since it is larger than the sum of its proper divisors (168169).

12387143 is a wasteful number, since it uses less digits than its factorization.

12387143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721.

The product of its digits is 4032, while the sum is 29.

The square root of 12387143 is about 3519.5373275475. The cubic root of 12387143 is about 231.3788813597.

The spelling of 12387143 in words is "twelve million, three hundred eighty-seven thousand, one hundred forty-three".