140042431011251 has 2 divisors, whose sum is σ = 140042431011252. Its totient is φ = 140042431011250.

The previous prime is 140042431011247. The next prime is 140042431011341. The reversal of 140042431011251 is 152110134240041.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 140042431011251 - 2² = 140042431011247 is a prime.

It is a super-2 number, since 2×140042431011251² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (140042431211251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70021215505625 + 70021215505626.

It is an arithmetic number, because the mean of its divisors is an integer number (70021215505626).

Almost surely, 2^{140042431011251} is an apocalyptic number.

140042431011251 is a deficient number, since it is larger than the sum of its proper divisors (1).

140042431011251 is an equidigital number, since it uses as much as digits as its factorization.

140042431011251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3840, while the sum is 29.

Adding to 140042431011251 its reverse (152110134240041), we get a palindrome (292152565251292).

The spelling of 140042431011251 in words is "one hundred forty trillion, forty-two billion, four hundred thirty-one million, eleven thousand, two hundred fifty-one".