542439 has 6 divisors (see below), whose sum is σ = 783536. Its totient is φ = 361620.

The previous prime is 542401. The next prime is 542441. The reversal of 542439 is 934245.

542439 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 542439 - 2⁸ = 542183 is a prime.

It is a d-powerful number, because it can be written as 5 + 4⁵ + 4⁷ + 2¹⁹ + 3⁶ + 9 .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542489) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30127 + ... + 30144.

2⁵⁴²⁴³⁹ is an apocalyptic number.

542439 is a deficient number, since it is larger than the sum of its proper divisors (241097).

542439 is a wasteful number, since it uses less digits than its factorization.

542439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60277 (or 60274 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 542439 is about 736.5045824705. The cubic root of 542439 is about 81.5549455724.

The spelling of 542439 in words is "five hundred forty-two thousand, four hundred thirty-nine".