2140444321 has 8 divisors (see below), whose sum is σ = 2214777600. Its totient is φ = 2066441520.

The previous prime is 2140444309. The next prime is 2140444333. The reversal of 2140444321 is 1234440412.

It is an interprime number because it is at equal distance from previous prime (2140444309) and next prime (2140444333).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2140444321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2140444301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69406 + ... + 95383.

It is an arithmetic number, because the mean of its divisors is an integer number (276847200).

Almost surely, 2^2140444321 is an apocalyptic number.

It is an amenable number.

2140444321 is a deficient number, since it is larger than the sum of its proper divisors (74333279).

2140444321 is a wasteful number, since it uses less digits than its factorization.

2140444321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165239.

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 2140444321 is about 46264.9361936229. The cubic root of 2140444321 is about 1288.7479229966.

Adding to 2140444321 its reverse (1234440412), we get a palindrome (3374884733).

The spelling of 2140444321 in words is "two billion, one hundred forty million, four hundred forty-four thousand, three hundred twenty-one".