440042342167 has 2 divisors, whose sum is σ = 440042342168. Its totient is φ = 440042342166.

The previous prime is 440042342161. The next prime is 440042342183. The reversal of 440042342167 is 761243240044.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-440042342167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (440042342161) 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, 220021171083 + 220021171084.

It is an arithmetic number, because the mean of its divisors is an integer number (220021171084).

Almost surely, 2^440042342167 is an apocalyptic number.

440042342167 is a deficient number, since it is larger than the sum of its proper divisors (1).

440042342167 is an equidigital number, since it uses as much as digits as its factorization.

440042342167 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129024, while the sum is 37.

The spelling of 440042342167 in words is "four hundred forty billion, forty-two million, three hundred forty-two thousand, one hundred sixty-seven".