140018 has 4 divisors (see below), whose sum is σ = 210030. Its totient is φ = 70008.

The previous prime is 140009. The next prime is 140053. The reversal of 140018 is 810041.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 810041 = 37 ⋅21893.

It can be written as a sum of positive squares in only one way, i.e., 134689 + 5329 = 367^2 + 73^2 .

140018 is a modest number, since divided by 18 gives 14 as remainder.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 139984 and 140011.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35003 + ... + 35006.

2¹⁴⁰⁰¹⁸ is an apocalyptic number.

140018 is a deficient number, since it is larger than the sum of its proper divisors (70012).

140018 is an equidigital number, since it uses as much as digits as its factorization.

140018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70011.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 140018 is about 374.1897914161. The cubic root of 140018 is about 51.9271662778.

Adding to 140018 its reverse (810041), we get a palindrome (950059).

It can be divided in two parts, 1400 and 18, that multiplied together give a triangular number (25200 = T₂₂₄).

The spelling of 140018 in words is "one hundred forty thousand, eighteen".