542405646642 has 8 divisors (see below), whose sum is σ = 1084811293296. Its totient is φ = 180801882212.

The previous prime is 542405646613. The next prime is 542405646659. The reversal of 542405646642 is 246646504245.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

542405646642 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 542405646591 and 542405646600.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45200470548 + ... + 45200470559.

It is an arithmetic number, because the mean of its divisors is an integer number (135601411662).

Almost surely, 2^542405646642 is an apocalyptic number.

542405646642 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

542405646642 is a wasteful number, since it uses less digits than its factorization.

542405646642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90400941112.

The product of its (nonzero) digits is 5529600, while the sum is 48.

The spelling of 542405646642 in words is "five hundred forty-two billion, four hundred five million, six hundred forty-six thousand, six hundred forty-two".