206066542 has 16 divisors (see below), whose sum is σ = 346314672. Its totient is φ = 91134720.

The previous prime is 206066521. The next prime is 206066551. The reversal of 206066542 is 245660602.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 125763 + ... + 127390.

It is an arithmetic number, because the mean of its divisors is an integer number (21644667).

Almost surely, 2^206066542 is an apocalyptic number.

206066542 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

206066542 is a deficient number, since it is larger than the sum of its proper divisors (140248130).

206066542 is a wasteful number, since it uses less digits than its factorization.

206066542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253203.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 206066542 is about 14355.0180076515. The cubic root of 206066542 is about 590.6576426329.

The spelling of 206066542 in words is "two hundred six million, sixty-six thousand, five hundred forty-two".