191285642 has 8 divisors (see below), whose sum is σ = 287001696. Its totient is φ = 95618412.

The previous prime is 191285587. The next prime is 191285657. The reversal of 191285642 is 246582191.

191285642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 191285596 and 191285605.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53 + ... + 19559.

It is an arithmetic number, because the mean of its divisors is an integer number (35875212).

Almost surely, 2^191285642 is an apocalyptic number.

191285642 is a deficient number, since it is larger than the sum of its proper divisors (95716054).

191285642 is a wasteful number, since it uses less digits than its factorization.

191285642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24412.

The product of its digits is 34560, while the sum is 38.

The square root of 191285642 is about 13830.6052651357. The cubic root of 191285642 is about 576.1834649788.

The spelling of 191285642 in words is "one hundred ninety-one million, two hundred eighty-five thousand, six hundred forty-two".