12140660 has 24 divisors (see below), whose sum is σ = 29137920. Its totient is φ = 4162464.

The previous prime is 12140651. The next prime is 12140671. The reversal of 12140660 is 6604121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43220 + ... + 43499.

It is an arithmetic number, because the mean of its divisors is an integer number (1214080).

Almost surely, 2^12140660 is an apocalyptic number.

12140660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12140660 is an abundant number, since it is smaller than the sum of its proper divisors (16997260).

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

12140660 is a wasteful number, since it uses less digits than its factorization.

12140660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86735 (or 86733 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 12140660 is about 3484.3449886600. The cubic root of 12140660 is about 229.8339065503.

Adding to 12140660 its reverse (6604121), we get a palindrome (18744781).

The spelling of 12140660 in words is "twelve million, one hundred forty thousand, six hundred sixty".