12513140 has 12 divisors (see below), whose sum is σ = 26277636. Its totient is φ = 5005248.

The previous prime is 12513101. The next prime is 12513157. The reversal of 12513140 is 4131521.

It can be written as a sum of positive squares in 2 ways, for example, as 9265936 + 3247204 = 3044^2 + 1802^2 .

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 312809 + ... + 312848.

It is an arithmetic number, because the mean of its divisors is an integer number (2189803).

Almost surely, 2^12513140 is an apocalyptic number.

12513140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12513140 is an abundant number, since it is smaller than the sum of its proper divisors (13764496).

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

12513140 is a wasteful number, since it uses less digits than its factorization.

12513140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625666 (or 625664 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 12513140 is about 3537.3916944551. The cubic root of 12513140 is about 232.1607338389.

Adding to 12513140 its reverse (4131521), we get a palindrome (16644661).

The spelling of 12513140 in words is "twelve million, five hundred thirteen thousand, one hundred forty".