12371905 has 16 divisors (see below), whose sum is σ = 18273024. Its totient is φ = 7830720.

The previous prime is 12371881. The next prime is 12371921. The reversal of 12371905 is 50917321.

12371905 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12371905 - 2²¹ = 10274753 is a prime.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 13141 + ... + 14050.

It is an arithmetic number, because the mean of its divisors is an integer number (1142064).

Almost surely, 2^12371905 is an apocalyptic number.

It is an amenable number.

12371905 is a deficient number, since it is larger than the sum of its proper divisors (5901119).

12371905 is a wasteful number, since it uses less digits than its factorization.

12371905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27216.

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 12371905 is about 3517.3718882143. The cubic root of 12371905 is about 231.2839657925.

The spelling of 12371905 in words is "twelve million, three hundred seventy-one thousand, nine hundred five".