140212186 has 16 divisors (see below), whose sum is σ = 224135424. Its totient is φ = 65630224.

The previous prime is 140212183. The next prime is 140212199. The reversal of 140212186 is 681212041.

It is a self number, because there is not a number n which added to its sum of digits gives 140212186.

It is not an unprimeable number, because it can be changed into a prime (140212181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30265 + ... + 34588.

It is an arithmetic number, because the mean of its divisors is an integer number (14008464).

Almost surely, 2^140212186 is an apocalyptic number.

140212186 is a deficient number, since it is larger than the sum of its proper divisors (83923238).

140212186 is a wasteful number, since it uses less digits than its factorization.

140212186 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64925.

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 140212186 is about 11841.1226663691. The cubic root of 140212186 is about 519.5116050422.

The spelling of 140212186 in words is "one hundred forty million, two hundred twelve thousand, one hundred eighty-six".