42015244169 has 2 divisors, whose sum is σ = 42015244170. Its totient is φ = 42015244168.

The previous prime is 42015244129. The next prime is 42015244247. The reversal of 42015244169 is 96144251024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33429368569 + 8585875600 = 182837^2 + 92660^2 .

It is a cyclic number.

It is not a de Polignac number, because 42015244169 - 2²⁰ = 42014195593 is a prime.

It is a super-2 number, since 2×42015244169² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42015244129) 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, 21007622084 + 21007622085.

It is an arithmetic number, because the mean of its divisors is an integer number (21007622085).

Almost surely, 2^42015244169 is an apocalyptic number.

It is an amenable number.

42015244169 is a deficient number, since it is larger than the sum of its proper divisors (1).

42015244169 is an equidigital number, since it uses as much as digits as its factorization.

42015244169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 38.

The spelling of 42015244169 in words is "forty-two billion, fifteen million, two hundred forty-four thousand, one hundred sixty-nine".