206432143 has 2 divisors, whose sum is σ = 206432144. Its totient is φ = 206432142.

The previous prime is 206432137. The next prime is 206432197. The reversal of 206432143 is 341234602.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 206432143 - 2²⁵ = 172877711 is a prime.

It is a super-2 number, since 2×206432143² = 85228459327144898, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206432123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103216071 + 103216072.

It is an arithmetic number, because the mean of its divisors is an integer number (103216072).

Almost surely, 2^206432143 is an apocalyptic number.

206432143 is a deficient number, since it is larger than the sum of its proper divisors (1).

206432143 is an equidigital number, since it uses as much as digits as its factorization.

206432143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 206432143 is about 14367.7466222091. The cubic root of 206432143 is about 591.0067490256.

Adding to 206432143 its reverse (341234602), we get a palindrome (547666745).

The spelling of 206432143 in words is "two hundred six million, four hundred thirty-two thousand, one hundred forty-three".