42179323171 has 2 divisors, whose sum is σ = 42179323172. Its totient is φ = 42179323170.

The previous prime is 42179323111. The next prime is 42179323177. The reversal of 42179323171 is 17132397124.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42179323171 is a prime.

It is not a weakly prime, because it can be changed into another prime (42179323177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21089661585 + 21089661586.

It is an arithmetic number, because the mean of its divisors is an integer number (21089661586).

Almost surely, 2^42179323171 is an apocalyptic number.

42179323171 is a deficient number, since it is larger than the sum of its proper divisors (1).

42179323171 is an equidigital number, since it uses as much as digits as its factorization.

42179323171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63504, while the sum is 40.

The spelling of 42179323171 in words is "forty-two billion, one hundred seventy-nine million, three hundred twenty-three thousand, one hundred seventy-one".