206470042 has 8 divisors (see below), whose sum is σ = 309774132. Its totient is φ = 103212000.

The previous prime is 206470037. The next prime is 206470051. The reversal of 206470042 is 240074602.

It can be written as a sum of positive squares in 2 ways, for example, as 199911321 + 6558721 = 14139^2 + 2561^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 206469989 and 206470016.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3742 + ... + 20662.

Almost surely, 2^206470042 is an apocalyptic number.

206470042 is a deficient number, since it is larger than the sum of its proper divisors (103304090).

206470042 is a wasteful number, since it uses less digits than its factorization.

206470042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23024.

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 206470042 is about 14369.0654532576. The cubic root of 206470042 is about 591.0429145728.

The spelling of 206470042 in words is "two hundred six million, four hundred seventy thousand, forty-two".