542438 has 16 divisors (see below), whose sum is σ = 905856. Its totient is φ = 241920.

The previous prime is 542401. The next prime is 542441. The reversal of 542438 is 834245.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a d-powerful number, because it can be written as 5 + 4⁵ + 4⁷ + 2¹⁹ + 3⁶ + 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 542438.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 470 + ... + 1142.

It is an arithmetic number, because the mean of its divisors is an integer number (56616).

2⁵⁴²⁴³⁸ is an apocalyptic number.

542438 is a deficient number, since it is larger than the sum of its proper divisors (363418).

542438 is a wasteful number, since it uses less digits than its factorization.

542438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719.

The product of its digits is 3840, while the sum is 26.

The square root of 542438 is about 736.5039035878. The cubic root of 542438 is about 81.5548954562.

The spelling of 542438 in words is "five hundred forty-two thousand, four hundred thirty-eight".