140243 has 4 divisors (see below), whose sum is σ = 142680. Its totient is φ = 137808.

The previous prime is 140237. The next prime is 140249. The reversal of 140243 is 342041.

140243 is nontrivially palindromic in base 3.

140243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

140243 is an esthetic number in base 3, because in such base its adjacent digits differ by 1.

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

It is an interprime number because it is at equal distance from previous prime (140237) and next prime (140249).

It is a cyclic number.

It is not a de Polignac number, because 140243 - 2⁴ = 140227 is a prime.

It is a Duffinian number.

It is a plaindrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (140249) 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, 1130 + ... + 1247.

It is an arithmetic number, because the mean of its divisors is an integer number (35670).

2¹⁴⁰²⁴³ is an apocalyptic number.

140243 is a deficient number, since it is larger than the sum of its proper divisors (2437).

140243 is an equidigital number, since it uses as much as digits as its factorization.

140243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2436.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 140243 is about 374.4903203021. The cubic root of 140243 is about 51.9549659409.

Adding to 140243 its reverse (342041), we get a palindrome (482284).

It can be divided in two parts, 140 and 243, that added together give a palindrome (383).

The spelling of 140243 in words is "one hundred forty thousand, two hundred forty-three", and thus it is an iban number.