542558 has 4 divisors (see below), whose sum is σ = 813840. Its totient is φ = 271278.

The previous prime is 542557. The next prime is 542567. The reversal of 542558 is 855245.

542558 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 855245 = 5 ⋅171049.

It is a self number, because there is not a number n which added to its sum of digits gives 542558.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 135638 + ... + 135641.

It is an arithmetic number, because the mean of its divisors is an integer number (203460).

2⁵⁴²⁵⁵⁸ is an apocalyptic number.

542558 is a deficient number, since it is larger than the sum of its proper divisors (271282).

542558 is a wasteful number, since it uses less digits than its factorization.

542558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271281.

The product of its digits is 8000, while the sum is 29.

The square root of 542558 is about 736.5853650460. The cubic root of 542558 is about 81.5609089642.

The spelling of 542558 in words is "five hundred forty-two thousand, five hundred fifty-eight".