12537143 has 4 divisors (see below), whose sum is σ = 13274640. Its totient is φ = 11799648.

The previous prime is 12537121. The next prime is 12537149. The reversal of 12537143 is 34173521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34173521 = 643 ⋅53147.

It is a cyclic number.

It is not a de Polignac number, because 12537143 - 2⁶ = 12537079 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 (12537149) 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, 368723 + ... + 368756.

It is an arithmetic number, because the mean of its divisors is an integer number (3318660).

Almost surely, 2^12537143 is an apocalyptic number.

12537143 is a deficient number, since it is larger than the sum of its proper divisors (737497).

12537143 is an equidigital number, since it uses as much as digits as its factorization.

12537143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 737496.

The product of its digits is 2520, while the sum is 26.

The square root of 12537143 is about 3540.7828230492. The cubic root of 12537143 is about 232.3090844195.

The spelling of 12537143 in words is "twelve million, five hundred thirty-seven thousand, one hundred forty-three".