140144401 has 2 divisors, whose sum is σ = 140144402. Its totient is φ = 140144400.

The previous prime is 140144377. The next prime is 140144423. The reversal of 140144401 is 104441041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 139240000 + 904401 = 11800^2 + 951^2 .

It is a cyclic number.

It is not a de Polignac number, because 140144401 - 2²¹ = 138047249 is a prime.

It is not a weakly prime, because it can be changed into another prime (140144471) 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 as a sum of consecutive naturals, namely, 70072200 + 70072201.

It is an arithmetic number, because the mean of its divisors is an integer number (70072201).

Almost surely, 2^140144401 is an apocalyptic number.

It is an amenable number.

140144401 is a deficient number, since it is larger than the sum of its proper divisors (1).

140144401 is an equidigital number, since it uses as much as digits as its factorization.

140144401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 140144401 is about 11838.2600495174. The cubic root of 140144401 is about 519.4278729703.

Adding to 140144401 its reverse (104441041), we get a palindrome (244585442).

The spelling of 140144401 in words is "one hundred forty million, one hundred forty-four thousand, four hundred one".