191572242 has 16 divisors (see below), whose sum is σ = 385361280. Its totient is φ = 63487952.

The previous prime is 191572237. The next prime is 191572253. The reversal of 191572242 is 242275191.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91242 + ... + 93317.

It is an arithmetic number, because the mean of its divisors is an integer number (24085080).

Almost surely, 2^191572242 is an apocalyptic number.

191572242 is an abundant number, since it is smaller than the sum of its proper divisors (193789038).

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

191572242 is a wasteful number, since it uses less digits than its factorization.

191572242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184737.

The product of its digits is 10080, while the sum is 33.

The square root of 191572242 is about 13840.9624665339. The cubic root of 191572242 is about 576.4710833198.

The spelling of 191572242 in words is "one hundred ninety-one million, five hundred seventy-two thousand, two hundred forty-two".