199129142 has 16 divisors (see below), whose sum is σ = 302387712. Its totient is φ = 98340480.

The previous prime is 199129127. The next prime is 199129187. The reversal of 199129142 is 241921991.

It is a junction number, because it is equal to n+sod(n) for n = 199129096 and 199129105.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 59588 + ... + 62840.

It is an arithmetic number, because the mean of its divisors is an integer number (18899232).

Almost surely, 2^199129142 is an apocalyptic number.

199129142 is a deficient number, since it is larger than the sum of its proper divisors (103258570).

199129142 is a wasteful number, since it uses less digits than its factorization.

199129142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3623.

The product of its digits is 11664, while the sum is 38.

The square root of 199129142 is about 14111.3125541177. The cubic root of 199129142 is about 583.9535112647.

The spelling of 199129142 in words is "one hundred ninety-nine million, one hundred twenty-nine thousand, one hundred forty-two".