191796142 has 16 divisors (see below), whose sum is σ = 304886160. Its totient is φ = 90177408.

The previous prime is 191796133. The next prime is 191796167. The reversal of 191796142 is 241697191.

It is a junction number, because it is equal to n+sod(n) for n = 191796095 and 191796104.

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, 57784 + ... + 61012.

It is an arithmetic number, because the mean of its divisors is an integer number (19055385).

Almost surely, 2^191796142 is an apocalyptic number.

191796142 is a deficient number, since it is larger than the sum of its proper divisors (113090018).

191796142 is a wasteful number, since it uses less digits than its factorization.

191796142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4995.

The product of its digits is 27216, while the sum is 40.

The square root of 191796142 is about 13849.0484149634. The cubic root of 191796142 is about 576.6955793509.

The spelling of 191796142 in words is "one hundred ninety-one million, seven hundred ninety-six thousand, one hundred forty-two".