140385 has 24 divisors (see below), whose sum is σ = 262656. Its totient is φ = 63840.

The previous prime is 140381. The next prime is 140401. The reversal of 140385 is 583041.

It is not a de Polignac number, because 140385 - 2² = 140381 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

140385 is a lucky 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 140385.

It is not an unprimeable number, because it can be changed into a prime (140381) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 640 + ... + 830.

It is an arithmetic number, because the mean of its divisors is an integer number (10944).

2¹⁴⁰³⁸⁵ is an apocalyptic number.

140385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

140385 is a deficient number, since it is larger than the sum of its proper divisors (122271).

140385 is a wasteful number, since it uses less digits than its factorization.

140385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213 (or 206 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 140385 is about 374.6798633500. The cubic root of 140385 is about 51.9724953163.

It can be divided in two parts, 140 and 385, that added together give a palindrome (525).

The spelling of 140385 in words is "one hundred forty thousand, three hundred eighty-five".