2144123340 has 24 divisors (see below), whose sum is σ = 6003545520. Its totient is φ = 571766208.

The previous prime is 2144123329. The next prime is 2144123357. The reversal of 2144123340 is 433214412.

It is a self number, because there is not a number n which added to its sum of digits gives 2144123340.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17867635 + ... + 17867754.

It is an arithmetic number, because the mean of its divisors is an integer number (250147730).

Almost surely, 2^2144123340 is an apocalyptic number.

2144123340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2144123340 is an abundant number, since it is smaller than the sum of its proper divisors (3859422180).

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

2144123340 is a wasteful number, since it uses less digits than its factorization.

2144123340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35735401 (or 35735399 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 2144123340 is about 46304.6794611517. The cubic root of 2144123340 is about 1289.4858716797.

Adding to 2144123340 its reverse (433214412), we get a palindrome (2577337752).

The spelling of 2144123340 in words is "two billion, one hundred forty-four million, one hundred twenty-three thousand, three hundred forty".