140485 has 4 divisors (see below), whose sum is σ = 168588. Its totient is φ = 112384.

The previous prime is 140477. The next prime is 140521. The reversal of 140485 is 584041.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15876 + 124609 = 126^2 + 353^2 .

It is a cyclic number.

It is not a de Polignac number, because 140485 - 2³ = 140477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 14044 + ... + 14053.

It is an arithmetic number, because the mean of its divisors is an integer number (42147).

2¹⁴⁰⁴⁸⁵ is an apocalyptic number.

It is an amenable number.

140485 is a deficient number, since it is larger than the sum of its proper divisors (28103).

140485 is an equidigital number, since it uses as much as digits as its factorization.

140485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28102.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 140485 is about 374.8132868509. The cubic root of 140485 is about 51.9848328546.

Subtracting 140485 from its reverse (584041), we obtain a square (443556 = 666²).

It can be divided in two parts, 140 and 485, that added together give a 4-th power (625 = 5⁴).

The spelling of 140485 in words is "one hundred forty thousand, four hundred eighty-five".