206143000 has 128 divisors (see below), whose sum is σ = 563472000. Its totient is φ = 70560000.

The previous prime is 206142983. The next prime is 206143001. The reversal of 206143000 is 341602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206143001) 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 31 ways as a sum of consecutive naturals, for example, 342700 + ... + 343300.

It is an arithmetic number, because the mean of its divisors is an integer number (4402125).

Almost surely, 2^206143000 is an apocalyptic number.

206143000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 206143000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (281736000).

206143000 is an abundant number, since it is smaller than the sum of its proper divisors (357329000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

206143000 is an equidigital number, since it uses as much as digits as its factorization.

206143000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643 (or 615 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 206143000 is about 14357.6808712271. The cubic root of 206143000 is about 590.7306852487.

Adding to 206143000 its reverse (341602), we get a palindrome (206484602).

The spelling of 206143000 in words is "two hundred six million, one hundred forty-three thousand".