206204642 has 12 divisors (see below), whose sum is σ = 359806230. Its totient is φ = 88373376.

The previous prime is 206204641. The next prime is 206204657. The reversal of 206204642 is 246402602.

206204642 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 196588441 + 9616201 = 14021^2 + 3101^2 .

It is not an unprimeable number, because it can be changed into a prime (206204641) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1051967 + ... + 1052162.

Almost surely, 2^206204642 is an apocalyptic number.

206204642 is a deficient number, since it is larger than the sum of its proper divisors (153601588).

206204642 is a wasteful number, since it uses less digits than its factorization.

206204642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2104145 (or 2104138 counting only the distinct ones).

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

The square root of 206204642 is about 14359.8273666503. The cubic root of 206204642 is about 590.7895605472.

The spelling of 206204642 in words is "two hundred six million, two hundred four thousand, six hundred forty-two".