140238 has 48 divisors (see below), whose sum is σ = 369360. Its totient is φ = 39312.

The previous prime is 140237. The next prime is 140249. The reversal of 140238 is 832041.

It is a happy number.

140238 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an Ulam number.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 140238.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140237) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2620 + ... + 2672.

It is an arithmetic number, because the mean of its divisors is an integer number (7695).

2¹⁴⁰²³⁸ is an apocalyptic number.

140238 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 140238, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (184680).

140238 is an abundant number, since it is smaller than the sum of its proper divisors (229122).

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

140238 is a wasteful number, since it uses less digits than its factorization.

140238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78 (or 65 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 140238 is about 374.4836445027. The cubic root of 140238 is about 51.9543484938.

Adding to 140238 its reverse (832041), we get a palindrome (972279).

It can be divided in two parts, 140 and 238, that added together give a triangular number (378 = T₂₇).

The spelling of 140238 in words is "one hundred forty thousand, two hundred thirty-eight".