2144425140 has 144 divisors (see below), whose sum is σ = 7642043136. Its totient is φ = 479865600.

The previous prime is 2144425057. The next prime is 2144425147. The reversal of 2144425140 is 415244412.

2144425140 is a `hidden beast` number, since 2 + 144 + 4 + 2 + 514 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2144425147) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15916 + ... + 67395.

It is an arithmetic number, because the mean of its divisors is an integer number (53069744).

Almost surely, 2^2144425140 is an apocalyptic number.

2144425140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2144425140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3821021568).

2144425140 is an abundant number, since it is smaller than the sum of its proper divisors (5497617996).

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

2144425140 is a wasteful number, since it uses less digits than its factorization.

2144425140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83350 (or 83345 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

The square root of 2144425140 is about 46307.9381963827. The cubic root of 2144425140 is about 1289.5463701550.

Adding to 2144425140 its reverse (415244412), we get a palindrome (2559669552).

The spelling of 2144425140 in words is "two billion, one hundred forty-four million, four hundred twenty-five thousand, one hundred forty".