191895042 has 8 divisors (see below), whose sum is σ = 383790096. Its totient is φ = 63965012.

The previous prime is 191895019. The next prime is 191895043. The reversal of 191895042 is 240598191.

It is a sphenic number, since it is the product of 3 distinct primes.

191895042 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (191895043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15991248 + ... + 15991259.

It is an arithmetic number, because the mean of its divisors is an integer number (47973762).

Almost surely, 2^191895042 is an apocalyptic number.

191895042 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

191895042 is a wasteful number, since it uses less digits than its factorization.

191895042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31982512.

The product of its (nonzero) digits is 25920, while the sum is 39.

The square root of 191895042 is about 13852.6185972184. The cubic root of 191895042 is about 576.7946869964.

The spelling of 191895042 in words is "one hundred ninety-one million, eight hundred ninety-five thousand, forty-two".