42165285242063 has 2 divisors, whose sum is σ = 42165285242064. Its totient is φ = 42165285242062.

The previous prime is 42165285242021. The next prime is 42165285242107. The reversal of 42165285242063 is 36024258256124.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42165285242063 - 2³⁰ = 42164211500239 is a prime.

It is a super-2 number, since 2×42165285242063² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42165285242963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21082642621031 + 21082642621032.

It is an arithmetic number, because the mean of its divisors is an integer number (21082642621032).

Almost surely, 2^{42165285242063} is an apocalyptic number.

42165285242063 is a deficient number, since it is larger than the sum of its proper divisors (1).

42165285242063 is an equidigital number, since it uses as much as digits as its factorization.

42165285242063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5529600, while the sum is 50.

The spelling of 42165285242063 in words is "forty-two trillion, one hundred sixty-five billion, two hundred eighty-five million, two hundred forty-two thousand, sixty-three".