206240642 has 8 divisors (see below), whose sum is σ = 316555536. Its totient is φ = 100722132.

The previous prime is 206240633. The next prime is 206240669. The reversal of 206240642 is 246042602.

206240642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

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, 1198988 + ... + 1199159.

It is an arithmetic number, because the mean of its divisors is an integer number (39569442).

Almost surely, 2^206240642 is an apocalyptic number.

206240642 is a deficient number, since it is larger than the sum of its proper divisors (110314894).

206240642 is a wasteful number, since it uses less digits than its factorization.

206240642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2398192.

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 206240642 is about 14361.0808089085. The cubic root of 206240642 is about 590.8239393183.

The spelling of 206240642 in words is "two hundred six million, two hundred forty thousand, six hundred forty-two".