12943537 has 4 divisors (see below), whose sum is σ = 13089060. Its totient is φ = 12798016.

The previous prime is 12943531. The next prime is 12943543. The reversal of 12943537 is 73534921.

12943537 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 73534921 = 19 ⋅3870259.

It is an interprime number because it is at equal distance from previous prime (12943531) and next prime (12943543).

It can be written as a sum of positive squares in 2 ways, for example, as 2178576 + 10764961 = 1476^2 + 3281^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12943537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12943531) 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, 72628 + ... + 72805.

It is an arithmetic number, because the mean of its divisors is an integer number (3272265).

Almost surely, 2^12943537 is an apocalyptic number.

It is an amenable number.

12943537 is a deficient number, since it is larger than the sum of its proper divisors (145523).

12943537 is an equidigital number, since it uses as much as digits as its factorization.

12943537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145522.

The product of its digits is 22680, while the sum is 34.

The square root of 12943537 is about 3597.7127456205. The cubic root of 12943537 is about 234.7925557300.

The spelling of 12943537 in words is "twelve million, nine hundred forty-three thousand, five hundred thirty-seven".