206515242 has 48 divisors (see below), whose sum is σ = 470665728. Its totient is φ = 65351520.

The previous prime is 206515223. The next prime is 206515259. The reversal of 206515242 is 242515602.

206515242 is a `hidden beast` number, since 2 + 0 + 651 + 5 + 2 + 4 + 2 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26083 + ... + 33065.

It is an arithmetic number, because the mean of its divisors is an integer number (9805536).

Almost surely, 2^206515242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 206515242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (235332864).

206515242 is an abundant number, since it is smaller than the sum of its proper divisors (264150486).

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

206515242 is a wasteful number, since it uses less digits than its factorization.

206515242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7075 (or 7072 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 206515242 is about 14370.6381904215. The cubic root of 206515242 is about 591.0860413952.

The spelling of 206515242 in words is "two hundred six million, five hundred fifteen thousand, two hundred forty-two".