1002143 has 2 divisors, whose sum is σ = 1002144. Its totient is φ = 1002142.

The previous prime is 1002121. The next prime is 1002149. The reversal of 1002143 is 3412001.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1002143 - 2¹⁴ = 985759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1002149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501071 + 501072.

It is an arithmetic number, because the mean of its divisors is an integer number (501072).

2^1002143 is an apocalyptic number.

1002143 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002143 is an equidigital number, since it uses as much as digits as its factorization.

1002143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 1002143 is about 1001.0709265582. The cubic root of 1002143 is about 100.0713823668.

Adding to 1002143 its reverse (3412001), we get a palindrome (4414144).

The spelling of 1002143 in words is "one million, two thousand, one hundred forty-three".