140788705 has 4 divisors (see below), whose sum is σ = 168946452. Its totient is φ = 112630960.

The previous prime is 140788699. The next prime is 140788717. The reversal of 140788705 is 507887041.

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 42719296 + 98069409 = 6536^2 + 9903^2 .

It is not a de Polignac number, because 140788705 - 2¹³ = 140780513 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 an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14078866 + ... + 14078875.

It is an arithmetic number, because the mean of its divisors is an integer number (42236613).

Almost surely, 2^140788705 is an apocalyptic number.

It is an amenable number.

140788705 is a deficient number, since it is larger than the sum of its proper divisors (28157747).

140788705 is an equidigital number, since it uses as much as digits as its factorization.

140788705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28157746.

The product of its (nonzero) digits is 62720, while the sum is 40.

The square root of 140788705 is about 11865.4416268422. The cubic root of 140788705 is about 520.2226672129. Note that the first 3 decimals are identical.

The spelling of 140788705 in words is "one hundred forty million, seven hundred eighty-eight thousand, seven hundred five".