542242106665 has 16 divisors (see below), whose sum is σ = 753059566080. Its totient is φ = 367116534720.

The previous prime is 542242106587. The next prime is 542242106677. The reversal of 542242106665 is 566601242245.

It is a happy number.

It is not a de Polignac number, because 542242106665 - 2²⁷ = 542107888937 is a prime.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 98051866 + ... + 98057395.

It is an arithmetic number, because the mean of its divisors is an integer number (47066222880).

Almost surely, 2^542242106665 is an apocalyptic number.

It is an amenable number.

542242106665 is a deficient number, since it is larger than the sum of its proper divisors (210817459415).

542242106665 is a wasteful number, since it uses less digits than its factorization.

542242106665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196109352.

The product of its (nonzero) digits is 691200, while the sum is 43.

The spelling of 542242106665 in words is "five hundred forty-two billion, two hundred forty-two million, one hundred six thousand, six hundred sixty-five".