140186 has 8 divisors (see below), whose sum is σ = 217620. Its totient is φ = 67648.

The previous prime is 140177. The next prime is 140191. The reversal of 140186 is 681041.

It can be written as a sum of positive squares in 2 ways, for example, as 126025 + 14161 = 355^2 + 119^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×140186² = 39304229192, which contains 22 as substring.

It is a pancake number, because a pancake can be divided into 140186 parts by 529 straight cuts.

It is a Curzon number.

It is a plaindrome in base 16.

It is an unprimeable number.

140186 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1151 + ... + 1266.

2¹⁴⁰¹⁸⁶ is an apocalyptic number.

140186 is a deficient number, since it is larger than the sum of its proper divisors (77434).

140186 is a wasteful number, since it uses less digits than its factorization.

140186 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2448.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 140186 is about 374.4142091321. The cubic root of 140186 is about 51.9479261734.

The spelling of 140186 in words is "one hundred forty thousand, one hundred eighty-six".