12535140 has 48 divisors (see below), whose sum is σ = 35703360. Its totient is φ = 3285120.

The previous prime is 12535123. The next prime is 12535141. The reversal of 12535140 is 4153521.

It is not an unprimeable number, because it can be changed into a prime (12535141) by changing a digit.

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, 1770 + ... + 5310.

It is an arithmetic number, because the mean of its divisors is an integer number (743820).

Almost surely, 2^12535140 is an apocalyptic number.

12535140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a pronic number, being equal to 3540×3541.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12535140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17851680).

12535140 is an abundant number, since it is smaller than the sum of its proper divisors (23168220).

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

12535140 is a wasteful number, since it uses less digits than its factorization.

12535140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3612 (or 3610 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 12535140 is about 3540.4999646943. The cubic root of 12535140 is about 232.2967121196.

Adding to 12535140 its reverse (4153521), we get a palindrome (16688661).

The spelling of 12535140 in words is "twelve million, five hundred thirty-five thousand, one hundred forty".