12124140 has 48 divisors (see below), whose sum is σ = 38798592. Its totient is φ = 2771136.

The previous prime is 12124139. The next prime is 12124153. The reversal of 12124140 is 4142121.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14014 + ... + 14853.

It is an arithmetic number, because the mean of its divisors is an integer number (808304).

Almost surely, 2^12124140 is an apocalyptic number.

12124140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12124140 is an abundant number, since it is smaller than the sum of its proper divisors (26674452).

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

12124140 is a wasteful number, since it uses less digits than its factorization.

12124140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28886 (or 28884 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 12124140 is about 3481.9735783030. The cubic root of 12124140 is about 229.7296129455.

Adding to 12124140 its reverse (4142121), we get a palindrome (16266261).

The spelling of 12124140 in words is "twelve million, one hundred twenty-four thousand, one hundred forty".