206172142 has 24 divisors (see below), whose sum is σ = 343471968. Its totient is φ = 92737920.

The previous prime is 206172139. The next prime is 206172151. The reversal of 206172142 is 241271602.

206172142 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19083 + ... + 27865.

It is an arithmetic number, because the mean of its divisors is an integer number (14311332).

Almost surely, 2^206172142 is an apocalyptic number.

206172142 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

206172142 is a deficient number, since it is larger than the sum of its proper divisors (137299826).

206172142 is a wasteful number, since it uses less digits than its factorization.

206172142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8904 (or 8893 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 206172142 is about 14358.6956928546. The cubic root of 206172142 is about 590.7585207197.

The spelling of 206172142 in words is "two hundred six million, one hundred seventy-two thousand, one hundred forty-two".