140285289 has 8 divisors (see below), whose sum is σ = 188763520. Its totient is φ = 92665296.

The previous prime is 140285287. The next prime is 140285291. The reversal of 140285289 is 982582041.

It is an interprime number because it is at equal distance from previous prime (140285287) and next prime (140285291).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 140285289 - 2¹ = 140285287 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (140285287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 214177 + ... + 214830.

It is an arithmetic number, because the mean of its divisors is an integer number (23595440).

Almost surely, 2^140285289 is an apocalyptic number.

It is an amenable number.

140285289 is a deficient number, since it is larger than the sum of its proper divisors (48478231).

140285289 is a wasteful number, since it uses less digits than its factorization.

140285289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429119.

The product of its (nonzero) digits is 46080, while the sum is 39.

The square root of 140285289 is about 11844.2090913661. The cubic root of 140285289 is about 519.6018759848.

The spelling of 140285289 in words is "one hundred forty million, two hundred eighty-five thousand, two hundred eighty-nine".