12937143 has 4 divisors (see below), whose sum is σ = 17249528. Its totient is φ = 8624760.

The previous prime is 12937139. The next prime is 12937151. The reversal of 12937143 is 34173921.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 12937143 - 2² = 12937139 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12937143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12937163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2156188 + ... + 2156193.

It is an arithmetic number, because the mean of its divisors is an integer number (4312382).

Almost surely, 2^12937143 is an apocalyptic number.

12937143 is a deficient number, since it is larger than the sum of its proper divisors (4312385).

12937143 is an equidigital number, since it uses as much as digits as its factorization.

12937143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4312384.

The product of its digits is 4536, while the sum is 30.

The square root of 12937143 is about 3596.8240157116. The cubic root of 12937143 is about 234.7538875032.

The spelling of 12937143 in words is "twelve million, nine hundred thirty-seven thousand, one hundred forty-three".