542606066123 has 4 divisors (see below), whose sum is σ = 591933890328. Its totient is φ = 493278241920.

The previous prime is 542606066053. The next prime is 542606066141. The reversal of 542606066123 is 321660606245.

It is a happy number.

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 542606066123 - 2²⁴ = 542589288907 is a prime.

It is a super-2 number, since 2×542606066123² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (542666066123) 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, 24663912086 + ... + 24663912107.

It is an arithmetic number, because the mean of its divisors is an integer number (147983472582).

Almost surely, 2^542606066123 is an apocalyptic number.

542606066123 is a deficient number, since it is larger than the sum of its proper divisors (49327824205).

542606066123 is a wasteful number, since it uses less digits than its factorization.

542606066123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49327824204.

The product of its (nonzero) digits is 311040, while the sum is 41.

The spelling of 542606066123 in words is "five hundred forty-two billion, six hundred six million, sixty-six thousand, one hundred twenty-three".