12840107 has 24 divisors (see below), whose sum is σ = 15759360. Its totient is φ = 10417680.

The previous prime is 12840103. The next prime is 12840109. The reversal of 12840107 is 70104821.

12840107 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 12840107 - 2² = 12840103 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12840103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 119948 + ... + 120054.

It is an arithmetic number, because the mean of its divisors is an integer number (656640).

Almost surely, 2^12840107 is an apocalyptic number.

12840107 is a deficient number, since it is larger than the sum of its proper divisors (2919253).

12840107 is a wasteful number, since it uses less digits than its factorization.

12840107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231 (or 224 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 12840107 is about 3583.3095037967. The cubic root of 12840107 is about 234.1654842767.

Adding to 12840107 its reverse (70104821), we get a palindrome (82944928).

The spelling of 12840107 in words is "twelve million, eight hundred forty thousand, one hundred seven".