140305 has 8 divisors (see below), whose sum is σ = 183744. Its totient is φ = 102000.

The previous prime is 140297. The next prime is 140317. The reversal of 140305 is 503041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 140305 - 2³ = 140297 is a prime.

140305 is a lucky number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1221 + ... + 1330.

It is an arithmetic number, because the mean of its divisors is an integer number (22968).

2¹⁴⁰³⁰⁵ is an apocalyptic number.

It is an amenable number.

140305 is a deficient number, since it is larger than the sum of its proper divisors (43439).

140305 is a wasteful number, since it uses less digits than its factorization.

140305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2567.

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 140305 is about 374.5730903308. The cubic root of 140305 is about 51.9626210665.

Adding to 140305 its reverse (503041), we get a palindrome (643346).

The spelling of 140305 in words is "one hundred forty thousand, three hundred five".