206412434 has 4 divisors (see below), whose sum is σ = 309618654. Its totient is φ = 103206216.

The previous prime is 206412433. The next prime is 206412439. The reversal of 206412434 is 434214602.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 201725209 + 4687225 = 14203^2 + 2165^2 .

It is not an unprimeable number, because it can be changed into a prime (206412433) 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 as a sum of consecutive naturals, namely, 51603107 + ... + 51603110.

Almost surely, 2^206412434 is an apocalyptic number.

206412434 is a deficient number, since it is larger than the sum of its proper divisors (103206220).

206412434 is a wasteful number, since it uses less digits than its factorization.

206412434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103206219.

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 206412434 is about 14367.0607293211. The cubic root of 206412434 is about 590.9879397411.

The spelling of 206412434 in words is "two hundred six million, four hundred twelve thousand, four hundred thirty-four".