199142937 has 24 divisors (see below), whose sum is σ = 331123520. Its totient is φ = 112972320.

The previous prime is 199142927. The next prime is 199142939. The reversal of 199142937 is 739241991.

199142937 is a `hidden beast` number, since 199 + 1 + 429 + 37 = 666.

It is not a de Polignac number, because 199142937 - 2⁴ = 199142921 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 199142892 and 199142901.

It is not an unprimeable number, because it can be changed into a prime (199142939) 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 23 ways as a sum of consecutive naturals, for example, 2614 + ... + 20127.

Almost surely, 2^199142937 is an apocalyptic number.

It is an amenable number.

199142937 is a deficient number, since it is larger than the sum of its proper divisors (131980583).

199142937 is a wasteful number, since it uses less digits than its factorization.

199142937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22893 (or 22890 counting only the distinct ones).

The product of its digits is 122472, while the sum is 45.

The square root of 199142937 is about 14111.8013378874. The cubic root of 199142937 is about 583.9669957344.

The spelling of 199142937 in words is "one hundred ninety-nine million, one hundred forty-two thousand, nine hundred thirty-seven".