140421323291 has 2 divisors, whose sum is σ = 140421323292. Its totient is φ = 140421323290.

The previous prime is 140421323171. The next prime is 140421323377. The reversal of 140421323291 is 192323124041.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140421323291 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (140421323491) 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, 70210661645 + 70210661646.

It is an arithmetic number, because the mean of its divisors is an integer number (70210661646).

Almost surely, 2^140421323291 is an apocalyptic number.

140421323291 is a deficient number, since it is larger than the sum of its proper divisors (1).

140421323291 is an equidigital number, since it uses as much as digits as its factorization.

140421323291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 32.

The spelling of 140421323291 in words is "one hundred forty billion, four hundred twenty-one million, three hundred twenty-three thousand, two hundred ninety-one".