140165 has 12 divisors (see below), whose sum is σ = 180516. Its totient is φ = 104448.

The previous prime is 140159. The next prime is 140167. The reversal of 140165 is 561041.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 5476 + 134689 = 74^2 + 367^2 .

It is not a de Polignac number, because 140165 - 2¹² = 136069 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 140165.

It is not an unprimeable number, because it can be changed into a prime (140167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1397 + ... + 1493.

It is an arithmetic number, because the mean of its divisors is an integer number (15043).

2¹⁴⁰¹⁶⁵ is an apocalyptic number.

It is an amenable number.

140165 is a deficient number, since it is larger than the sum of its proper divisors (40351).

140165 is an equidigital number, since it uses as much as digits as its factorization.

140165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136 (or 119 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 140165 is about 374.3861642743. The cubic root of 140165 is about 51.9453320938.

The spelling of 140165 in words is "one hundred forty thousand, one hundred sixty-five".