1000144243 has 6 divisors (see below), whose sum is σ = 1163433156. Its totient is φ = 857266452.

The previous prime is 1000144241. The next prime is 1000144247. The reversal of 1000144243 is 3424410001.

It is not a de Polignac number, because 1000144243 - 2¹ = 1000144241 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1000144243.

It is not an unprimeable number, because it can be changed into a prime (1000144241) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10205505 + ... + 10205602.

It is an arithmetic number, because the mean of its divisors is an integer number (193905526).

Almost surely, 2^1000144243 is an apocalyptic number.

1000144243 is a deficient number, since it is larger than the sum of its proper divisors (163288913).

1000144243 is an equidigital number, since it uses as much as digits as its factorization.

1000144243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20411121 (or 20411114 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1000144243 is about 31625.0572015293. The cubic root of 1000144243 is about 1000.0480786884.

Adding to 1000144243 its reverse (3424410001), we get a palindrome (4424554244).

The spelling of 1000144243 in words is "one billion, one hundred forty-four thousand, two hundred forty-three".