140494685 has 4 divisors (see below), whose sum is σ = 168593628. Its totient is φ = 112395744.

The previous prime is 140494663. The next prime is 140494691. The reversal of 140494685 is 586494041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 586494041 = 7 ⋅83784863.

It can be written as a sum of positive squares in 2 ways, for example, as 38019556 + 102475129 = 6166^2 + 10123^2 .

It is a cyclic number.

It is not a de Polignac number, because 140494685 - 2²⁴ = 123717469 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 (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14049464 + ... + 14049473.

It is an arithmetic number, because the mean of its divisors is an integer number (42148407).

Almost surely, 2^140494685 is an apocalyptic number.

It is an amenable number.

140494685 is a deficient number, since it is larger than the sum of its proper divisors (28098943).

140494685 is an equidigital number, since it uses as much as digits as its factorization.

140494685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28098942.

The product of its (nonzero) digits is 138240, while the sum is 41.

The square root of 140494685 is about 11853.0453892660. The cubic root of 140494685 is about 519.8602743423.

The spelling of 140494685 in words is "one hundred forty million, four hundred ninety-four thousand, six hundred eighty-five".