12508140 has 24 divisors (see below), whose sum is σ = 35022960. Its totient is φ = 3335488.

The previous prime is 12508123. The next prime is 12508147. The reversal of 12508140 is 4180521.

It is not an unprimeable number, because it can be changed into a prime (12508147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104175 + ... + 104294.

It is an arithmetic number, because the mean of its divisors is an integer number (1459290).

Almost surely, 2^12508140 is an apocalyptic number.

12508140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12508140 is an abundant number, since it is smaller than the sum of its proper divisors (22514820).

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

12508140 is a wasteful number, since it uses less digits than its factorization.

12508140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208481 (or 208479 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 12508140 is about 3536.6848884231. The cubic root of 12508140 is about 232.1298074603.

Adding to 12508140 its reverse (4180521), we get a palindrome (16688661).

The spelling of 12508140 in words is "twelve million, five hundred eight thousand, one hundred forty".