140881 has 4 divisors (see below), whose sum is σ = 151732. Its totient is φ = 130032.

The previous prime is 140869. The next prime is 140891. The reversal of 140881 is 188041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 188041 = 7 ⋅26863.

It can be written as a sum of positive squares in 2 ways, for example, as 25281 + 115600 = 159^2 + 340^2 .

It is a cyclic number.

It is not a de Polignac number, because 140881 - 2¹³ = 132689 is a prime.

It is a super-2 number, since 2×140881² = 39694912322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140831) 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, 5406 + ... + 5431.

It is an arithmetic number, because the mean of its divisors is an integer number (37933).

2¹⁴⁰⁸⁸¹ is an apocalyptic number.

It is an amenable number.

140881 is a deficient number, since it is larger than the sum of its proper divisors (10851).

140881 is a wasteful number, since it uses less digits than its factorization.

140881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10850.

The product of its (nonzero) digits is 256, while the sum is 22.

The square root of 140881 is about 375.3411781300. The cubic root of 140881 is about 52.0336320892.

Subtracting from 140881 its product of nonzero digits (256), we obtain a square (140625 = 375²).

The spelling of 140881 in words is "one hundred forty thousand, eight hundred eighty-one".