140542085 has 4 divisors (see below), whose sum is σ = 168650508. Its totient is φ = 112433664.

The previous prime is 140542063. The next prime is 140542097. The reversal of 140542085 is 580245041.

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 55920484 + 84621601 = 7478^2 + 9199^2 .

It is a cyclic number.

It is not a de Polignac number, because 140542085 - 2¹⁰ = 140541061 is a prime.

It is a super-2 number, since 2×140542085² = 39504155312294450, which contains 22 as substring.

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, 14054204 + ... + 14054213.

It is an arithmetic number, because the mean of its divisors is an integer number (42162627).

Almost surely, 2^140542085 is an apocalyptic number.

It is an amenable number.

140542085 is a deficient number, since it is larger than the sum of its proper divisors (28108423).

140542085 is an equidigital number, since it uses as much as digits as its factorization.

140542085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28108422.

The product of its (nonzero) digits is 6400, while the sum is 29.

The square root of 140542085 is about 11855.0447067904. The cubic root of 140542085 is about 519.9187311357.

The spelling of 140542085 in words is "one hundred forty million, five hundred forty-two thousand, eighty-five".