206406042 has 8 divisors (see below), whose sum is σ = 412812096. Its totient is φ = 68802012.

The previous prime is 206406037. The next prime is 206406047. The reversal of 206406042 is 240604602.

It is an interprime number because it is at equal distance from previous prime (206406037) and next prime (206406047).

It is a sphenic number, since it is the product of 3 distinct primes.

206406042 is an admirable number.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (206406047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17200498 + ... + 17200509.

It is an arithmetic number, because the mean of its divisors is an integer number (51601512).

Almost surely, 2^206406042 is an apocalyptic number.

206406042 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

206406042 is a wasteful number, since it uses less digits than its factorization.

206406042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34401012.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 206406042 is about 14366.8382743038. The cubic root of 206406042 is about 590.9818392786.

The spelling of 206406042 in words is "two hundred six million, four hundred six thousand, forty-two".