140843 has 4 divisors (see below), whose sum is σ = 142080. Its totient is φ = 139608.

The previous prime is 140839. The next prime is 140863. The reversal of 140843 is 348041.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 140843 - 2² = 140839 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 428 + ... + 681.

It is an arithmetic number, because the mean of its divisors is an integer number (35520).

2¹⁴⁰⁸⁴³ is an apocalyptic number.

140843 is a deficient number, since it is larger than the sum of its proper divisors (1237).

140843 is a wasteful number, since it uses less digits than its factorization.

140843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1236.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 140843 is about 375.2905541044. The cubic root of 140843 is about 52.0289533040.

Adding to 140843 its reverse (348041), we get a palindrome (488884).

The spelling of 140843 in words is "one hundred forty thousand, eight hundred forty-three".