542744 has 8 divisors (see below), whose sum is σ = 1017660. Its totient is φ = 271368.

The previous prime is 542723. The next prime is 542747. The reversal of 542744 is 447245.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 542744.

It is not an unprimeable number, because it can be changed into a prime (542747) by changing a digit.

542744 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33914 + ... + 33929.

2⁵⁴²⁷⁴⁴ is an apocalyptic number.

It is an amenable number.

542744 is a deficient number, since it is larger than the sum of its proper divisors (474916).

542744 is a wasteful number, since it uses less digits than its factorization.

542744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67849 (or 67845 counting only the distinct ones).

The product of its digits is 4480, while the sum is 26.

The square root of 542744 is about 736.7116125052. The cubic root of 542744 is about 81.5702281497.

Adding to 542744 its reverse (447245), we get a palindrome (989989).

The spelling of 542744 in words is "five hundred forty-two thousand, seven hundred forty-four".