1002143441 has 12 divisors (see below), whose sum is σ = 1097266716. Its totient is φ = 909846720.

The previous prime is 1002143431. The next prime is 1002143449. The reversal of 1002143441 is 1443412001.

It can be written as a sum of positive squares in 6 ways, for example, as 810597841 + 191545600 = 28471^2 + 13840^2 .

It is not a de Polignac number, because 1002143441 - 2²⁶ = 935034577 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002143449) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38015 + ... + 58731.

It is an arithmetic number, because the mean of its divisors is an integer number (91438893).

Almost surely, 2^1002143441 is an apocalyptic number.

It is an amenable number.

1002143441 is a deficient number, since it is larger than the sum of its proper divisors (95123275).

1002143441 is an equidigital number, since it uses as much as digits as its factorization.

1002143441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20852 (or 20791 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1002143441 is about 31656.6492383512. The cubic root of 1002143441 is about 1000.7139704582.

Adding to 1002143441 its reverse (1443412001), we get a palindrome (2445555442).

The spelling of 1002143441 in words is "one billion, two million, one hundred forty-three thousand, four hundred forty-one".