20000143 has 8 divisors (see below), whose sum is σ = 21243600. Its totient is φ = 18764160.

The previous prime is 20000107. The next prime is 20000147. The reversal of 20000143 is 34100002.

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

It is a cyclic number.

It is not a de Polignac number, because 20000143 - 2⁹ = 19999631 is a prime.

It is a Duffinian number.

20000143 is a modest number, since divided by 143 gives 20 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20000147) 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 in 7 ways as a sum of consecutive naturals, for example, 4248 + ... + 7618.

It is an arithmetic number, because the mean of its divisors is an integer number (2655450).

Almost surely, 2^20000143 is an apocalyptic number.

20000143 is a deficient number, since it is larger than the sum of its proper divisors (1243457).

20000143 is a wasteful number, since it uses less digits than its factorization.

20000143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3737.

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 20000143 is about 4472.1519428570. The cubic root of 20000143 is about 271.4424085941.

Adding to 20000143 its reverse (34100002), we get a palindrome (54100145).

The spelling of 20000143 in words is "twenty million, one hundred forty-three", and thus it is an aban number.