12871642 has 16 divisors (see below), whose sum is σ = 22286592. Its totient is φ = 5461200.

The previous prime is 12871637. The next prime is 12871643. The reversal of 12871642 is 24617821.

It is not an unprimeable number, because it can be changed into a prime (12871643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3138 + ... + 5965.

It is an arithmetic number, because the mean of its divisors is an integer number (1392912).

Almost surely, 2^12871642 is an apocalyptic number.

12871642 is a deficient number, since it is larger than the sum of its proper divisors (9414950).

12871642 is a wasteful number, since it uses less digits than its factorization.

12871642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9213.

The product of its digits is 5376, while the sum is 31.

The square root of 12871642 is about 3587.7070671949. The cubic root of 12871642 is about 234.3570291880.

The spelling of 12871642 in words is "twelve million, eight hundred seventy-one thousand, six hundred forty-two".