141891 has 4 divisors (see below), whose sum is σ = 189192. Its totient is φ = 94592.

The previous prime is 141871. The next prime is 141907. The reversal of 141891 is 198141.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 198141 = 3 ⋅66047.

It is a cyclic number.

It is not a de Polignac number, because 141891 - 2¹⁰ = 140867 is a prime.

It is a D-number.

It is a plaindrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (141811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23646 + ... + 23651.

It is an arithmetic number, because the mean of its divisors is an integer number (47298).

2¹⁴¹⁸⁹¹ is an apocalyptic number.

141891 is a deficient number, since it is larger than the sum of its proper divisors (47301).

141891 is an equidigital number, since it uses as much as digits as its factorization.

141891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47300.

The product of its digits is 288, while the sum is 24.

The square root of 141891 is about 376.6842178802. The cubic root of 141891 is about 52.1576821191.

The spelling of 141891 in words is "one hundred forty-one thousand, eight hundred ninety-one".