12258140 has 24 divisors (see below), whose sum is σ = 25982880. Its totient is φ = 4857408.

The previous prime is 12258131. The next prime is 12258151. The reversal of 12258140 is 4185221.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 632 + ... + 4991.

It is an arithmetic number, because the mean of its divisors is an integer number (1082620).

Almost surely, 2^12258140 is an apocalyptic number.

12258140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12258140 is an abundant number, since it is smaller than the sum of its proper divisors (13724740).

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

12258140 is a wasteful number, since it uses less digits than its factorization.

12258140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5741 (or 5739 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 12258140 is about 3501.1626640303. The cubic root of 12258140 is about 230.5728630954.

The spelling of 12258140 in words is "twelve million, two hundred fifty-eight thousand, one hundred forty".