1002144143 has 36 divisors (see below), whose sum is σ = 1363373424. Its totient is φ = 720720000.

The previous prime is 1002144139. The next prime is 1002144191. The reversal of 1002144143 is 3414412001.

It is not a de Polignac number, because 1002144143 - 2² = 1002144139 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002144133) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 139643 + ... + 146643.

It is an arithmetic number, because the mean of its divisors is an integer number (37871484).

Almost surely, 2^1002144143 is an apocalyptic number.

1002144143 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1002144143 is a deficient number, since it is larger than the sum of its proper divisors (361229281).

1002144143 is a wasteful number, since it uses less digits than its factorization.

1002144143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7056 (or 7032 counting only the distinct ones).

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

The square root of 1002144143 is about 31656.6603260672. The cubic root of 1002144143 is about 1000.7142041244.

Adding to 1002144143 its reverse (3414412001), we get a palindrome (4416556144).

The spelling of 1002144143 in words is "one billion, two million, one hundred forty-four thousand, one hundred forty-three".