12131442140 has 24 divisors (see below), whose sum is σ = 25568011392. Its totient is φ = 4835056320.

The previous prime is 12131442119. The next prime is 12131442143. The reversal of 12131442140 is 4124413121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12131442143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1089356 + ... + 1100435.

It is an arithmetic number, because the mean of its divisors is an integer number (1065333808).

Almost surely, 2^12131442140 is an apocalyptic number.

12131442140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12131442140 is an abundant number, since it is smaller than the sum of its proper divisors (13436569252).

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

12131442140 is a wasteful number, since it uses less digits than its factorization.

12131442140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2190077 (or 2190075 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 12131442140 its reverse (4124413121), we get a palindrome (16255855261).

The spelling of 12131442140 in words is "twelve billion, one hundred thirty-one million, four hundred forty-two thousand, one hundred forty".