140172385 has 16 divisors (see below), whose sum is σ = 170030016. Its totient is φ = 110930368.

The previous prime is 140172379. The next prime is 140172397. The reversal of 140172385 is 583271041.

It is not a de Polignac number, because 140172385 - 2⁷ = 140172257 is a prime.

It is a Duffinian 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 15 ways as a sum of consecutive naturals, for example, 299922 + ... + 300388.

It is an arithmetic number, because the mean of its divisors is an integer number (10626876).

Almost surely, 2^140172385 is an apocalyptic number.

It is an amenable number.

140172385 is a deficient number, since it is larger than the sum of its proper divisors (29857631).

140172385 is a wasteful number, since it uses less digits than its factorization.

140172385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 992.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 140172385 is about 11839.4419209691. The cubic root of 140172385 is about 519.4624437466.

The spelling of 140172385 in words is "one hundred forty million, one hundred seventy-two thousand, three hundred eighty-five".