140785547 has 4 divisors (see below), whose sum is σ = 160897776. Its totient is φ = 120673320.

The previous prime is 140785531. The next prime is 140785549. The reversal of 140785547 is 745587041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 745587041 = 397 ⋅1878053.

It is a cyclic number.

It is not a de Polignac number, because 140785547 - 2⁴ = 140785531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140785549) 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 3 ways as a sum of consecutive naturals, for example, 10056104 + ... + 10056117.

It is an arithmetic number, because the mean of its divisors is an integer number (40224444).

Almost surely, 2^140785547 is an apocalyptic number.

140785547 is a deficient number, since it is larger than the sum of its proper divisors (20112229).

140785547 is an equidigital number, since it uses as much as digits as its factorization.

140785547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20112228.

The product of its (nonzero) digits is 156800, while the sum is 41.

The square root of 140785547 is about 11865.3085505603. The cubic root of 140785547 is about 520.2187775176.

The spelling of 140785547 in words is "one hundred forty million, seven hundred eighty-five thousand, five hundred forty-seven".