2144123105140 has 12 divisors (see below), whose sum is σ = 4502658520836. Its totient is φ = 857649242048.

The previous prime is 2144123105093. The next prime is 2144123105141. The reversal of 2144123105140 is 415013214412.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 969366270096 + 1174756835044 = 984564^2 + 1083862^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2144123105099 and 2144123105108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2144123105141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53603077609 + ... + 53603077648.

It is an arithmetic number, because the mean of its divisors is an integer number (375221543403).

Almost surely, 2^{2144123105140} is an apocalyptic number.

2144123105140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2144123105140 is an abundant number, since it is smaller than the sum of its proper divisors (2358535415696).

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

2144123105140 is a wasteful number, since it uses less digits than its factorization.

2144123105140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107206155266 (or 107206155264 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

Adding to 2144123105140 its reverse (415013214412), we get a palindrome (2559136319552).

The spelling of 2144123105140 in words is "two trillion, one hundred forty-four billion, one hundred twenty-three million, one hundred five thousand, one hundred forty".