2142440344 has 64 divisors (see below), whose sum is σ = 4441456800. Its totient is φ = 960768000.

The previous prime is 2142440329. The next prime is 2142440389. The reversal of 2142440344 is 4430442412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3846114 + ... + 3846670.

Almost surely, 2^2142440344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2142440344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2220728400).

2142440344 is an abundant number, since it is smaller than the sum of its proper divisors (2299016456).

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

2142440344 is a wasteful number, since it uses less digits than its factorization.

2142440344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1084 (or 1080 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

The square root of 2142440344 is about 46286.5028274982. The cubic root of 2142440344 is about 1289.1483961262.

Adding to 2142440344 its reverse (4430442412), we get a palindrome (6572882756).

The spelling of 2142440344 in words is "two billion, one hundred forty-two million, four hundred forty thousand, three hundred forty-four".