542567844 has 144 divisors (see below), whose sum is σ = 1746501120. Its totient is φ = 138136320.

The previous prime is 542567843. The next prime is 542567867. The reversal of 542567844 is 448765245.

542567844 is a `hidden beast` number, since 5 + 4 + 2 + 567 + 84 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 542567844.

It is not an unprimeable number, because it can be changed into a prime (542567843) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 92149 + ... + 97859.

It is an arithmetic number, because the mean of its divisors is an integer number (12128480).

Almost surely, 2^542567844 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 542567844, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (873250560).

542567844 is an abundant number, since it is smaller than the sum of its proper divisors (1203933276).

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

542567844 is a wasteful number, since it uses less digits than its factorization.

542567844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5770 (or 5765 counting only the distinct ones).

The product of its digits is 1075200, while the sum is 45.

The square root of 542567844 is about 23293.0857552193. The cubic root of 542567844 is about 815.6140223299.

The spelling of 542567844 in words is "five hundred forty-two million, five hundred sixty-seven thousand, eight hundred forty-four".