12144105140 has 24 divisors (see below), whose sum is σ = 25506539520. Its totient is φ = 4856895648.

The previous prime is 12144105131. The next prime is 12144105143. The reversal of 12144105140 is 4150144121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12144105143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97649 + ... + 183911.

It is an arithmetic number, because the mean of its divisors is an integer number (1062772480).

Almost surely, 2^12144105140 is an apocalyptic number.

12144105140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12144105140 is an abundant number, since it is smaller than the sum of its proper divisors (13362434380).

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

12144105140 is a wasteful number, since it uses less digits than its factorization.

12144105140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93311 (or 93309 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 23.

Adding to 12144105140 its reverse (4150144121), we get a palindrome (16294249261).

The spelling of 12144105140 in words is "twelve billion, one hundred forty-four million, one hundred five thousand, one hundred forty".