140442657391 has 2 divisors, whose sum is σ = 140442657392. Its totient is φ = 140442657390.

The previous prime is 140442657367. The next prime is 140442657427. The reversal of 140442657391 is 193756244041.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 140442657391 - 2⁷ = 140442657263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140442657491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70221328695 + 70221328696.

It is an arithmetic number, because the mean of its divisors is an integer number (70221328696).

Almost surely, 2^140442657391 is an apocalyptic number.

140442657391 is a deficient number, since it is larger than the sum of its proper divisors (1).

140442657391 is an equidigital number, since it uses as much as digits as its factorization.

140442657391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 725760, while the sum is 46.

The spelling of 140442657391 in words is "one hundred forty billion, four hundred forty-two million, six hundred fifty-seven thousand, three hundred ninety-one".