140505 has 32 divisors (see below), whose sum is σ = 259200. Its totient is φ = 64512.

The previous prime is 140477. The next prime is 140521. The reversal of 140505 is 505041.

140505 = 114² + 115² + ... + 123².

It is not a de Polignac number, because 140505 - 2⁵ = 140473 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a nialpdrome in base 11.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 140505.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4831 + ... + 4859.

It is an arithmetic number, because the mean of its divisors is an integer number (8100).

2¹⁴⁰⁵⁰⁵ is an apocalyptic number.

140505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

140505 is a deficient number, since it is larger than the sum of its proper divisors (118695).

140505 is a wasteful number, since it uses less digits than its factorization.

140505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73.

The product of its (nonzero) digits is 100, while the sum is 15.

The square root of 140505 is about 374.8399658521. The cubic root of 140505 is about 51.9872996597.

Adding to 140505 its reverse (505041), we get a palindrome (645546).

The spelling of 140505 in words is "one hundred forty thousand, five hundred five".