542420306633 has 4 divisors (see below), whose sum is σ = 542441104788. Its totient is φ = 542399508480.

The previous prime is 542420306609. The next prime is 542420306641. The reversal of 542420306633 is 336603024245.

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

It can be written as a sum of positive squares in 2 ways, for example, as 223831179664 + 318589126969 = 473108^2 + 564437^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-542420306633 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (542420306663) 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 in 3 ways as a sum of consecutive naturals, for example, 10359908 + ... + 10412133.

It is an arithmetic number, because the mean of its divisors is an integer number (135610276197).

Almost surely, 2^542420306633 is an apocalyptic number.

It is an amenable number.

542420306633 is a deficient number, since it is larger than the sum of its proper divisors (20798155).

542420306633 is a wasteful number, since it uses less digits than its factorization.

542420306633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20798154.

The product of its (nonzero) digits is 311040, while the sum is 38.

The spelling of 542420306633 in words is "five hundred forty-two billion, four hundred twenty million, three hundred six thousand, six hundred thirty-three".