206401043 has 4 divisors (see below), whose sum is σ = 206992800. Its totient is φ = 205809288.

The previous prime is 206401001. The next prime is 206401051. The reversal of 206401043 is 340104602.

It is a happy number.

206401043 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 206401043 - 2²⁰ = 205352467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206401243) 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, 295355 + ... + 296052.

It is an arithmetic number, because the mean of its divisors is an integer number (51748200).

Almost surely, 2^206401043 is an apocalyptic number.

206401043 is a deficient number, since it is larger than the sum of its proper divisors (591757).

206401043 is an equidigital number, since it uses as much as digits as its factorization.

206401043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591756.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 206401043 is about 14366.6642962102. The cubic root of 206401043 is about 590.9770681940.

Adding to 206401043 its reverse (340104602), we get a palindrome (546505645).

The spelling of 206401043 in words is "two hundred six million, four hundred one thousand, forty-three".