140605 has 8 divisors (see below), whose sum is σ = 171864. Its totient is φ = 110400.

The previous prime is 140603. The next prime is 140611. The reversal of 140605 is 506041.

140605 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 729 + 139876 = 27^2 + 374^2 .

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

It is not a de Polignac number, because 140605 - 2¹ = 140603 is a prime.

It is a Duffinian number.

It is a plaindrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75 + ... + 535.

It is an arithmetic number, because the mean of its divisors is an integer number (21483).

2¹⁴⁰⁶⁰⁵ is an apocalyptic number.

It is an amenable number.

140605 is a deficient number, since it is larger than the sum of its proper divisors (31259).

140605 is an equidigital number, since it uses as much as digits as its factorization.

140605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 140605 is about 374.9733323851. The cubic root of 140605 is about 51.9996301749. Note that the first 3 decimals are identical.

Adding to 140605 its reverse (506041), we get a palindrome (646646).

The spelling of 140605 in words is "one hundred forty thousand, six hundred five".