42355008169 has 2 divisors, whose sum is σ = 42355008170. Its totient is φ = 42355008168.

The previous prime is 42355008133. The next prime is 42355008211. The reversal of 42355008169 is 96180055324.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40547057769 + 1807950400 = 201363^2 + 42520^2 .

It is a cyclic number.

It is not a de Polignac number, because 42355008169 - 2²⁷ = 42220790441 is a prime.

It is a super-2 number, since 2×42355008169² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42355008119) 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, 21177504084 + 21177504085.

It is an arithmetic number, because the mean of its divisors is an integer number (21177504085).

Almost surely, 2^42355008169 is an apocalyptic number.

It is an amenable number.

42355008169 is a deficient number, since it is larger than the sum of its proper divisors (1).

42355008169 is an equidigital number, since it uses as much as digits as its factorization.

42355008169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 259200, while the sum is 43.

The spelling of 42355008169 in words is "forty-two billion, three hundred fifty-five million, eight thousand, one hundred sixty-nine".