542105 has 4 divisors (see below), whose sum is σ = 650532. Its totient is φ = 433680.

The previous prime is 542093. The next prime is 542111. The reversal of 542105 is 501245.

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

It can be written as a sum of positive squares in 2 ways, for example, as 259081 + 283024 = 509^2 + 532^2 .

It is a de Polignac number, because none of the positive numbers 2^k-542105 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54206 + ... + 54215.

It is an arithmetic number, because the mean of its divisors is an integer number (162633).

2⁵⁴²¹⁰⁵ is an apocalyptic number.

It is an amenable number.

542105 is a deficient number, since it is larger than the sum of its proper divisors (108427).

542105 is a wasteful number, since it uses less digits than its factorization.

542105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108426.

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 542105 is about 736.2778008334. The cubic root of 542105 is about 81.5382033246.

The spelling of 542105 in words is "five hundred forty-two thousand, one hundred five".