140928565 has 4 divisors (see below), whose sum is σ = 169114284. Its totient is φ = 112742848.

The previous prime is 140928553. The next prime is 140928577. The reversal of 140928565 is 565829041.

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

It is an interprime number because it is at equal distance from previous prime (140928553) and next prime (140928577).

It can be written as a sum of positive squares in 2 ways, for example, as 61058596 + 79869969 = 7814^2 + 8937^2 .

It is a cyclic number.

It is not a de Polignac number, because 140928565 - 2¹¹ = 140926517 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14092852 + ... + 14092861.

It is an arithmetic number, because the mean of its divisors is an integer number (42278571).

Almost surely, 2^140928565 is an apocalyptic number.

It is an amenable number.

140928565 is a deficient number, since it is larger than the sum of its proper divisors (28185719).

140928565 is an equidigital number, since it uses as much as digits as its factorization.

140928565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28185718.

The product of its (nonzero) digits is 86400, while the sum is 40.

The square root of 140928565 is about 11871.3337498362. Note that the first 3 decimals coincide. The cubic root of 140928565 is about 520.3948738842.

The spelling of 140928565 in words is "one hundred forty million, nine hundred twenty-eight thousand, five hundred sixty-five".