542022444 has 18 divisors (see below), whose sum is σ = 1370112380. Its totient is φ = 180674136.

The previous prime is 542022431. The next prime is 542022463. The reversal of 542022444 is 444220245.

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7528054 + ... + 7528125.

Almost surely, 2^542022444 is an apocalyptic number.

It is an amenable number.

542022444 is an abundant number, since it is smaller than the sum of its proper divisors (828089936).

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

542022444 is a wasteful number, since it uses less digits than its factorization.

542022444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15056189 (or 15056184 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 27.

The square root of 542022444 is about 23281.3754748297. The cubic root of 542022444 is about 815.3406402213.

Adding to 542022444 its reverse (444220245), we get a palindrome (986242689).

The spelling of 542022444 in words is "five hundred forty-two million, twenty-two thousand, four hundred forty-four".