140186745 has 12 divisors (see below), whose sum is σ = 242990436. Its totient is φ = 74766240.

The previous prime is 140186741. The next prime is 140186789. The reversal of 140186745 is 547681041.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 111767184 + 28419561 = 10572^2 + 5331^2 .

It is not a de Polignac number, because 140186745 - 2² = 140186741 is a prime.

It is not an unprimeable number, because it can be changed into a prime (140186741) 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 11 ways as a sum of consecutive naturals, for example, 1557586 + ... + 1557675.

It is an arithmetic number, because the mean of its divisors is an integer number (20249203).

Almost surely, 2^140186745 is an apocalyptic number.

140186745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

140186745 is a deficient number, since it is larger than the sum of its proper divisors (102803691).

140186745 is a wasteful number, since it uses less digits than its factorization.

140186745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3115272 (or 3115269 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 140186745 is about 11840.0483529418. The cubic root of 140186745 is about 519.4801819670.

The spelling of 140186745 in words is "one hundred forty million, one hundred eighty-six thousand, seven hundred forty-five".