140838 has 8 divisors (see below), whose sum is σ = 281688. Its totient is φ = 46944.

The previous prime is 140837. The next prime is 140839. The reversal of 140838 is 838041.

It is an interprime number because it is at equal distance from previous prime (140837) and next prime (140839).

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

140838 is an admirable number.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11731 + ... + 11742.

It is an arithmetic number, because the mean of its divisors is an integer number (35211).

2¹⁴⁰⁸³⁸ is an apocalyptic number.

140838 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

140838 is a wasteful number, since it uses less digits than its factorization.

140838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23478.

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 140838 is about 375.2838925400. The cubic root of 140838 is about 52.0283376117.

Adding to 140838 its reverse (838041), we get a palindrome (978879).

The spelling of 140838 in words is "one hundred forty thousand, eight hundred thirty-eight".