542406444 has 12 divisors (see below), whose sum is σ = 1265615064. Its totient is φ = 180802144.

The previous prime is 542406439. The next prime is 542406451. The reversal of 542406444 is 444604245.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

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 3 ways as a sum of consecutive naturals, for example, 22600257 + ... + 22600280.

It is an arithmetic number, because the mean of its divisors is an integer number (105467922).

Almost surely, 2^542406444 is an apocalyptic number.

It is an amenable number.

542406444 is an abundant number, since it is smaller than the sum of its proper divisors (723208620).

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

542406444 is a wasteful number, since it uses less digits than its factorization.

542406444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45200544 (or 45200542 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 33.

The square root of 542406444 is about 23289.6209501142. The cubic root of 542406444 is about 815.5331395672.

The spelling of 542406444 in words is "five hundred forty-two million, four hundred six thousand, four hundred forty-four".