440142423191 has 2 divisors, whose sum is σ = 440142423192. Its totient is φ = 440142423190.

The previous prime is 440142423121. The next prime is 440142423197. The reversal of 440142423191 is 191324241044.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 440142423191 - 2³⁸ = 165264516247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (440142423197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220071211595 + 220071211596.

It is an arithmetic number, because the mean of its divisors is an integer number (220071211596).

Almost surely, 2^440142423191 is an apocalyptic number.

440142423191 is a deficient number, since it is larger than the sum of its proper divisors (1).

440142423191 is an equidigital number, since it uses as much as digits as its factorization.

440142423191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27648, while the sum is 35.

The spelling of 440142423191 in words is "four hundred forty billion, one hundred forty-two million, four hundred twenty-three thousand, one hundred ninety-one".