12131740 has 12 divisors (see below), whose sum is σ = 25476696. Its totient is φ = 4852688.

The previous prime is 12131711. The next prime is 12131759. The reversal of 12131740 is 4713121.

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 3 ways as a sum of consecutive naturals, for example, 303274 + ... + 303313.

It is an arithmetic number, because the mean of its divisors is an integer number (2123058).

Almost surely, 2^12131740 is an apocalyptic number.

12131740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12131740 is an abundant number, since it is smaller than the sum of its proper divisors (13344956).

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

12131740 is a wasteful number, since it uses less digits than its factorization.

12131740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606596 (or 606594 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 12131740 is about 3483.0647424359. The cubic root of 12131740 is about 229.7776048132. Note that the first 3 decimals are identical.

Adding to 12131740 its reverse (4713121), we get a palindrome (16844861).

The spelling of 12131740 in words is "twelve million, one hundred thirty-one thousand, seven hundred forty".