542086 has 4 divisors (see below), whose sum is σ = 813132. Its totient is φ = 271042.

The previous prime is 542083. The next prime is 542093. The reversal of 542086 is 680245.

It is a semiprime because it is the product of two primes.

It is a nialpdrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 542086.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 135520 + ... + 135523.

It is an arithmetic number, because the mean of its divisors is an integer number (203283).

2⁵⁴²⁰⁸⁶ is an apocalyptic number.

542086 is a deficient number, since it is larger than the sum of its proper divisors (271046).

542086 is a wasteful number, since it uses less digits than its factorization.

542086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271045.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 542086 is about 736.2648979817. The cubic root of 542086 is about 81.5372507146.

The spelling of 542086 in words is "five hundred forty-two thousand, eighty-six".