143205345 has 12 divisors (see below), whose sum is σ = 248222676. Its totient is φ = 76376160.

The previous prime is 143205301. The next prime is 143205371. The reversal of 143205345 is 543502341.

It can be written as a sum of positive squares in 2 ways, for example, as 19395216 + 123810129 = 4404^2 + 11127^2 .

It is not a de Polignac number, because 143205345 - 2⁷ = 143205217 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1591126 + ... + 1591215.

It is an arithmetic number, because the mean of its divisors is an integer number (20685223).

Almost surely, 2^143205345 is an apocalyptic number.

143205345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

143205345 is a deficient number, since it is larger than the sum of its proper divisors (105017331).

143205345 is a wasteful number, since it uses less digits than its factorization.

143205345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3182352 (or 3182349 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 143205345 is about 11966.8435687946. The cubic root of 143205345 is about 523.1823399932.

Adding to 143205345 its reverse (543502341), we get a palindrome (686707686).

The spelling of 143205345 in words is "one hundred forty-three million, two hundred five thousand, three hundred forty-five".