140244161 has 2 divisors, whose sum is σ = 140244162. Its totient is φ = 140244160.

The previous prime is 140244131. The next prime is 140244211. The reversal of 140244161 is 161442041.

It is a happy number.

140244161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 134212225 + 6031936 = 11585^2 + 2456^2 .

It is an emirp because it is prime and its reverse (161442041) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140244161 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (140244131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70122080 + 70122081.

It is an arithmetic number, because the mean of its divisors is an integer number (70122081).

Almost surely, 2^140244161 is an apocalyptic number.

It is an amenable number.

140244161 is a deficient number, since it is larger than the sum of its proper divisors (1).

140244161 is an equidigital number, since it uses as much as digits as its factorization.

140244161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 140244161 is about 11842.4727569879. The cubic root of 140244161 is about 519.5510931007.

The spelling of 140244161 in words is "one hundred forty million, two hundred forty-four thousand, one hundred sixty-one".