1020002143 has 2 divisors, whose sum is σ = 1020002144. Its totient is φ = 1020002142.

The previous prime is 1020002111. The next prime is 1020002173. The reversal of 1020002143 is 3412000201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1020002143 - 2⁵ = 1020002111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020002173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510001071 + 510001072.

It is an arithmetic number, because the mean of its divisors is an integer number (510001072).

Almost surely, 2^1020002143 is an apocalyptic number.

1020002143 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020002143 is an equidigital number, since it uses as much as digits as its factorization.

1020002143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1020002143 is about 31937.4723952914. The cubic root of 1020002143 is about 1006.6234145245.

Adding to 1020002143 its reverse (3412000201), we get a palindrome (4432002344).

The spelling of 1020002143 in words is "one billion, twenty million, two thousand, one hundred forty-three".