542216642243 has 4 divisors (see below), whose sum is σ = 542269126848. Its totient is φ = 542164157640.

The previous prime is 542216642189. The next prime is 542216642249. The reversal of 542216642243 is 342246612245.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 542216642243 - 2¹⁸ = 542216380099 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 542216642243.

It is not an unprimeable number, because it can be changed into a prime (542216642249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26226803 + ... + 26247468.

It is an arithmetic number, because the mean of its divisors is an integer number (135567281712).

Almost surely, 2^542216642243 is an apocalyptic number.

542216642243 is a deficient number, since it is larger than the sum of its proper divisors (52484605).

542216642243 is a wasteful number, since it uses less digits than its factorization.

542216642243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52484604.

The product of its digits is 552960, while the sum is 41.

The spelling of 542216642243 in words is "five hundred forty-two billion, two hundred sixteen million, six hundred forty-two thousand, two hundred forty-three".