1001442243 has 4 divisors (see below), whose sum is σ = 1335256328. Its totient is φ = 667628160.

The previous prime is 1001442229. The next prime is 1001442271. The reversal of 1001442243 is 3422441001.

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

It is not a de Polignac number, because 1001442243 - 2¹³ = 1001434051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1001442203) 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 3 ways as a sum of consecutive naturals, for example, 166907038 + ... + 166907043.

It is an arithmetic number, because the mean of its divisors is an integer number (333814082).

Almost surely, 2^1001442243 is an apocalyptic number.

1001442243 is a deficient number, since it is larger than the sum of its proper divisors (333814085).

1001442243 is an equidigital number, since it uses as much as digits as its factorization.

1001442243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333814084.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 1001442243 is about 31645.5722495265. The cubic root of 1001442243 is about 1000.4805167334.

Adding to 1001442243 its reverse (3422441001), we get a palindrome (4423883244).

The spelling of 1001442243 in words is "one billion, one million, four hundred forty-two thousand, two hundred forty-three".