140244253 has 2 divisors, whose sum is σ = 140244254. Its totient is φ = 140244252.

The previous prime is 140244229. The next prime is 140244281. The reversal of 140244253 is 352442041.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116057529 + 24186724 = 10773^2 + 4918^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140244253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140244283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70122126 + 70122127.

It is an arithmetic number, because the mean of its divisors is an integer number (70122127).

Almost surely, 2^140244253 is an apocalyptic number.

It is an amenable number.

140244253 is a deficient number, since it is larger than the sum of its proper divisors (1).

140244253 is an equidigital number, since it uses as much as digits as its factorization.

140244253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 140244253 is about 11842.4766413111. The cubic root of 140244253 is about 519.5512067090.

Adding to 140244253 its reverse (352442041), we get a palindrome (492686294).

The spelling of 140244253 in words is "one hundred forty million, two hundred forty-four thousand, two hundred fifty-three".