140293 has 4 divisors (see below), whose sum is σ = 141120. Its totient is φ = 139468.

The previous prime is 140281. The next prime is 140297. The reversal of 140293 is 392041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 140293 - 2¹⁷ = 9221 is a prime.

It is a Duffinian number.

140293 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 140293.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55 + ... + 532.

It is an arithmetic number, because the mean of its divisors is an integer number (35280).

2¹⁴⁰²⁹³ is an apocalyptic number.

It is an amenable number.

140293 is a deficient number, since it is larger than the sum of its proper divisors (827).

140293 is an equidigital number, since it uses as much as digits as its factorization.

140293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 826.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 140293 is about 374.5570717528. The cubic root of 140293 is about 51.9611396053.

The spelling of 140293 in words is "one hundred forty thousand, two hundred ninety-three".