542044012643 has 6 divisors (see below), whose sum is σ = 630540994356. Its totient is φ = 464609153652.

The previous prime is 542044012639. The next prime is 542044012669. The reversal of 542044012643 is 346210440245.

It is not a de Polignac number, because 542044012643 - 2² = 542044012639 is a prime.

It is not an unprimeable number, because it can be changed into a prime (542044017643) 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 5 ways as a sum of consecutive naturals, for example, 5531061305 + ... + 5531061402.

It is an arithmetic number, because the mean of its divisors is an integer number (105090165726).

Almost surely, 2^542044012643 is an apocalyptic number.

542044012643 is a deficient number, since it is larger than the sum of its proper divisors (88496981713).

542044012643 is a wasteful number, since it uses less digits than its factorization.

542044012643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11062122721 (or 11062122714 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 35.

Adding to 542044012643 its reverse (346210440245), we get a palindrome (888254452888).

The spelling of 542044012643 in words is "five hundred forty-two billion, forty-four million, twelve thousand, six hundred forty-three".