191140 has 24 divisors (see below), whose sum is σ = 423360. Its totient is φ = 72288.

The previous prime is 191137. The next prime is 191141. The reversal of 191140 is 41191.

It is a happy number.

191140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (191141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129 + ... + 631.

It is an arithmetic number, because the mean of its divisors is an integer number (17640).

2¹⁹¹¹⁴⁰ is an apocalyptic number.

191140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 191140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (211680).

191140 is an abundant number, since it is smaller than the sum of its proper divisors (232220).

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

191140 is a wasteful number, since it uses less digits than its factorization.

191140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531 (or 529 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 191140 is about 437.1956083951. The cubic root of 191140 is about 57.6037195386.

The spelling of 191140 in words is "one hundred ninety-one thousand, one hundred forty".