199142956 has 12 divisors (see below), whose sum is σ = 348929392. Its totient is φ = 99448848.

The previous prime is 199142939. The next prime is 199142959. The reversal of 199142956 is 659241991.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (199142959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26955 + ... + 33538.

Almost surely, 2^199142956 is an apocalyptic number.

It is an amenable number.

199142956 is a deficient number, since it is larger than the sum of its proper divisors (149786436).

199142956 is a wasteful number, since it uses less digits than its factorization.

199142956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61320 (or 61318 counting only the distinct ones).

The product of its digits is 174960, while the sum is 46.

The square root of 199142956 is about 14111.8020110828. The cubic root of 199142956 is about 583.9670143063.

The spelling of 199142956 in words is "one hundred ninety-nine million, one hundred forty-two thousand, nine hundred fifty-six".