12872140 has 24 divisors (see below), whose sum is σ = 27099072. Its totient is φ = 5136000.

The previous prime is 12872131. The next prime is 12872141. The reversal of 12872140 is 4127821.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (12872141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14592 + ... + 15448.

It is an arithmetic number, because the mean of its divisors is an integer number (1129128).

Almost surely, 2^12872140 is an apocalyptic number.

12872140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12872140 is an abundant number, since it is smaller than the sum of its proper divisors (14226932).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12872140 is a wasteful number, since it uses less digits than its factorization.

12872140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1617 (or 1615 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 12872140 is about 3587.7764701832. The cubic root of 12872140 is about 234.3600515503.

Adding to 12872140 its reverse (4127821), we get a palindrome (16999961).

The spelling of 12872140 in words is "twelve million, eight hundred seventy-two thousand, one hundred forty".