140256244 has 12 divisors (see below), whose sum is σ = 251435268. Its totient is φ = 68417600.

The previous prime is 140256241. The next prime is 140256247. The reversal of 140256244 is 442652041.

It is an interprime number because it is at equal distance from previous prime (140256241) and next prime (140256247).

It can be written as a sum of positive squares in 2 ways, for example, as 45427600 + 94828644 = 6740^2 + 9738^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140256241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 427447 + ... + 427774.

It is an arithmetic number, because the mean of its divisors is an integer number (20952939).

Almost surely, 2^140256244 is an apocalyptic number.

It is an amenable number.

140256244 is a deficient number, since it is larger than the sum of its proper divisors (111179024).

140256244 is a wasteful number, since it uses less digits than its factorization.

140256244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 855266 (or 855264 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 140256244 is about 11842.9829012796. The cubic root of 140256244 is about 519.5660136401.

The spelling of 140256244 in words is "one hundred forty million, two hundred fifty-six thousand, two hundred forty-four".