206210442 has 16 divisors (see below), whose sum is σ = 436681152. Its totient is φ = 64693440.

The previous prime is 206210437. The next prime is 206210447. The reversal of 206210442 is 244012602.

It is an interprime number because it is at equal distance from previous prime (206210437) and next prime (206210447).

It is not an unprimeable number, because it can be changed into a prime (206210447) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1010734 + ... + 1010937.

It is an arithmetic number, because the mean of its divisors is an integer number (27292572).

Almost surely, 2^206210442 is an apocalyptic number.

206210442 is an abundant number, since it is smaller than the sum of its proper divisors (230470710).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

206210442 is a wasteful number, since it uses less digits than its factorization.

206210442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2021693.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 206210442 is about 14360.0293175188. The cubic root of 206210442 is about 590.7950996196.

The spelling of 206210442 in words is "two hundred six million, two hundred ten thousand, four hundred forty-two".