2002144243 has 4 divisors (see below), whose sum is σ = 2184157368. Its totient is φ = 1820131120.

The previous prime is 2002144241. The next prime is 2002144279. The reversal of 2002144243 is 3424412002.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2002144243 - 2¹ = 2002144241 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2002144241) 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, 91006546 + ... + 91006567.

It is an arithmetic number, because the mean of its divisors is an integer number (546039342).

Almost surely, 2^2002144243 is an apocalyptic number.

2002144243 is a deficient number, since it is larger than the sum of its proper divisors (182013125).

2002144243 is a wasteful number, since it uses less digits than its factorization.

2002144243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182013124.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 2002144243 is about 44745.3264933892. The cubic root of 2002144243 is about 1260.3711518938.

Adding to 2002144243 its reverse (3424412002), we get a palindrome (5426556245).

The spelling of 2002144243 in words is "two billion, two million, one hundred forty-four thousand, two hundred forty-three".