12481240 has 16 divisors (see below), whose sum is σ = 28082880. Its totient is φ = 4992480.

The previous prime is 12481237. The next prime is 12481253. The reversal of 12481240 is 4218421.

It is a super-3 number, since 3×12481240³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155976 + ... + 156055.

It is an arithmetic number, because the mean of its divisors is an integer number (1755180).

Almost surely, 2^12481240 is an apocalyptic number.

12481240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12481240 is an abundant number, since it is smaller than the sum of its proper divisors (15601640).

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

12481240 is a wasteful number, since it uses less digits than its factorization.

12481240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312042 (or 312038 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

The square root of 12481240 is about 3532.8798451122. The cubic root of 12481240 is about 231.9632819417.

Adding to 12481240 its reverse (4218421), we get a palindrome (16699661).

It can be divided in two parts, 12481 and 240, that added together give a palindrome (12721).

The spelling of 12481240 in words is "twelve million, four hundred eighty-one thousand, two hundred forty".