42144321430171 has 2 divisors, whose sum is σ = 42144321430172. Its totient is φ = 42144321430170.

The previous prime is 42144321430147. The next prime is 42144321430229. The reversal of 42144321430171 is 17103412344124.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42144321430171 - 2²¹ = 42144319333019 is a prime.

It is a super-2 number, since 2×42144321430171² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42144321430171.

It is not a weakly prime, because it can be changed into another prime (42144321430121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21072160715085 + 21072160715086.

It is an arithmetic number, because the mean of its divisors is an integer number (21072160715086).

Almost surely, 2^{42144321430171} is an apocalyptic number.

42144321430171 is a deficient number, since it is larger than the sum of its proper divisors (1).

42144321430171 is an equidigital number, since it uses as much as digits as its factorization.

42144321430171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64512, while the sum is 37.

Adding to 42144321430171 its reverse (17103412344124), we get a palindrome (59247733774295).

The spelling of 42144321430171 in words is "forty-two trillion, one hundred forty-four billion, three hundred twenty-one million, four hundred thirty thousand, one hundred seventy-one".