12545240 has 32 divisors (see below), whose sum is σ = 28831680. Its totient is φ = 4910592.

The previous prime is 12545237. The next prime is 12545243. The reversal of 12545240 is 4254521.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12545237) and next prime (12545243).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12545243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1457 + ... + 5216.

It is an arithmetic number, because the mean of its divisors is an integer number (900990).

Almost surely, 2^12545240 is an apocalyptic number.

12545240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12545240 is an abundant number, since it is smaller than the sum of its proper divisors (16286440).

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

12545240 is a wasteful number, since it uses less digits than its factorization.

12545240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6731 (or 6727 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 12545240 is about 3541.9260297189. The cubic root of 12545240 is about 232.3590852279.

Adding to 12545240 its reverse (4254521), we get a palindrome (16799761).

The spelling of 12545240 in words is "twelve million, five hundred forty-five thousand, two hundred forty".