12144940 has 24 divisors (see below), whose sum is σ = 25794720. Its totient is φ = 4802688.

The previous prime is 12144931. The next prime is 12144959. The reversal of 12144940 is 4944121.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1632 + ... + 5191.

It is an arithmetic number, because the mean of its divisors is an integer number (1074780).

Almost surely, 2^12144940 is an apocalyptic number.

12144940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12144940 is an abundant number, since it is smaller than the sum of its proper divisors (13649780).

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

12144940 is a wasteful number, since it uses less digits than its factorization.

12144940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6921 (or 6919 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 12144940 is about 3484.9591102336. The cubic root of 12144940 is about 229.8609114948.

The spelling of 12144940 in words is "twelve million, one hundred forty-four thousand, nine hundred forty".