140442657427 has 2 divisors, whose sum is σ = 140442657428. Its totient is φ = 140442657426.

The previous prime is 140442657391. The next prime is 140442657437. The reversal of 140442657427 is 724756244041.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140442657427 is a prime.

It is not a weakly prime, because it can be changed into another prime (140442657437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70221328713 + 70221328714.

It is an arithmetic number, because the mean of its divisors is an integer number (70221328714).

Almost surely, 2^140442657427 is an apocalyptic number.

140442657427 is a deficient number, since it is larger than the sum of its proper divisors (1).

140442657427 is an equidigital number, since it uses as much as digits as its factorization.

140442657427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1505280, while the sum is 46.

The spelling of 140442657427 in words is "one hundred forty billion, four hundred forty-two million, six hundred fifty-seven thousand, four hundred twenty-seven".