206043145 has 32 divisors (see below), whose sum is σ = 326405376. Its totient is φ = 120883200.

The previous prime is 206043137. The next prime is 206043161. The reversal of 206043145 is 541340602.

It is not a de Polignac number, because 206043145 - 2³ = 206043137 is a prime.

It is an unprimeable number.

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, 9196 + ... + 22285.

It is an arithmetic number, because the mean of its divisors is an integer number (10200168).

Almost surely, 2^206043145 is an apocalyptic number.

It is an amenable number.

206043145 is a deficient number, since it is larger than the sum of its proper divisors (120362231).

206043145 is a wasteful number, since it uses less digits than its factorization.

206043145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31521.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 206043145 is about 14354.2030430115. The cubic root of 206043145 is about 590.6352871681.

Adding to 206043145 its reverse (541340602), we get a palindrome (747383747).

The spelling of 206043145 in words is "two hundred six million, forty-three thousand, one hundred forty-five".