206406041 has 4 divisors (see below), whose sum is σ = 208725300. Its totient is φ = 204086784.

The previous prime is 206406037. The next prime is 206406047. The reversal of 206406041 is 140604602.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 114169225 + 92236816 = 10685^2 + 9604^2 .

It is a cyclic number.

It is not a de Polignac number, because 206406041 - 2² = 206406037 is a prime.

It is a super-2 number, since 2×206406041² = 85206907522587362, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 206405998 and 206406016.

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, 1159496 + ... + 1159673.

It is an arithmetic number, because the mean of its divisors is an integer number (52181325).

Almost surely, 2^206406041 is an apocalyptic number.

It is an amenable number.

206406041 is a deficient number, since it is larger than the sum of its proper divisors (2319259).

206406041 is an equidigital number, since it uses as much as digits as its factorization.

206406041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2319258.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 206406041 is about 14366.8382395014. The cubic root of 206406041 is about 590.9818383242.

The spelling of 206406041 in words is "two hundred six million, four hundred six thousand, forty-one".