199969042 has 16 divisors (see below), whose sum is σ = 369173952. Its totient is φ = 79108560.

The previous prime is 199969039. The next prime is 199969043. The reversal of 199969042 is 240969991.

199969042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (199969043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 549184 + ... + 549547.

It is an arithmetic number, because the mean of its divisors is an integer number (23073372).

Almost surely, 2^199969042 is an apocalyptic number.

199969042 is a deficient number, since it is larger than the sum of its proper divisors (169204910).

199969042 is a wasteful number, since it uses less digits than its factorization.

199969042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1098753.

The product of its (nonzero) digits is 314928, while the sum is 49.

The square root of 199969042 is about 14141.0410507855. The cubic root of 199969042 is about 584.7733721719.

The spelling of 199969042 in words is "one hundred ninety-nine million, nine hundred sixty-nine thousand, forty-two".