1002000143 has 4 divisors (see below), whose sum is σ = 1002130248. Its totient is φ = 1001870040.

The previous prime is 1002000137. The next prime is 1002000173. The reversal of 1002000143 is 3410002001.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1002000143 - 2¹⁶ = 1001934607 is a prime.

It is a super-3 number, since 3×1002000143³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002000173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52721 + ... + 69162.

It is an arithmetic number, because the mean of its divisors is an integer number (250532562).

Almost surely, 2^1002000143 is an apocalyptic number.

1002000143 is a deficient number, since it is larger than the sum of its proper divisors (130105).

1002000143 is an equidigital number, since it uses as much as digits as its factorization.

1002000143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130104.

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

The square root of 1002000143 is about 31654.3858414596. The cubic root of 1002000143 is about 1000.6662703186. Note that the first 3 decimals are identical.

Adding to 1002000143 its reverse (3410002001), we get a palindrome (4412002144).

The spelling of 1002000143 in words is "one billion, two million, one hundred forty-three", and thus it is an aban number.