140256 has 36 divisors (see below), whose sum is σ = 399672. Its totient is φ = 46656.

The previous prime is 140249. The next prime is 140263. The reversal of 140256 is 652041.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (140249) and next prime (140263).

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 140256.

It is an unprimeable number.

140256 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 5 ways as a sum of consecutive naturals, for example, 45 + ... + 531.

It is an arithmetic number, because the mean of its divisors is an integer number (11102).

2¹⁴⁰²⁵⁶ is an apocalyptic number.

140256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (199836).

140256 is an abundant number, since it is smaller than the sum of its proper divisors (259416).

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

140256 is a wasteful number, since it uses less digits than its factorization.

140256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503 (or 492 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 140256 is about 374.5076768239. The cubic root of 140256 is about 51.9565712348.

Adding to 140256 its reverse (652041), we get a palindrome (792297).

The spelling of 140256 in words is "one hundred forty thousand, two hundred fifty-six".