4001002143 has 8 divisors (see below), whose sum is σ = 5386462848. Its totient is φ = 2641438104.

The previous prime is 4001002129. The next prime is 4001002169. The reversal of 4001002143 is 3412001004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4001002143 - 2¹⁶ = 4000936607 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4001002543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6473805 + ... + 6474422.

It is an arithmetic number, because the mean of its divisors is an integer number (673307856).

Almost surely, 2^4001002143 is an apocalyptic number.

4001002143 is a deficient number, since it is larger than the sum of its proper divisors (1385460705).

4001002143 is a wasteful number, since it uses less digits than its factorization.

4001002143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12948333.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 4001002143 is about 63253.4753432568. The cubic root of 4001002143 is about 1587.5336078032.

Adding to 4001002143 its reverse (3412001004), we get a palindrome (7413003147).

The spelling of 4001002143 in words is "four billion, one million, two thousand, one hundred forty-three".