542185 has 12 divisors (see below), whose sum is σ = 757188. Its totient is φ = 371616.

The previous prime is 542183. The next prime is 542189. The reversal of 542185 is 581245.

542185 is nontrivially palindromic in base 15.

It can be written as a sum of positive squares in 2 ways, for example, as 414736 + 127449 = 644^2 + 357^2 .

It is not a de Polignac number, because 542185 - 2¹ = 542183 is a prime.

It is a Duffinian number.

542185 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542183) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 862 + ... + 1351.

It is an arithmetic number, because the mean of its divisors is an integer number (63099).

2⁵⁴²¹⁸⁵ is an apocalyptic number.

It is an amenable number.

542185 is a deficient number, since it is larger than the sum of its proper divisors (215003).

542185 is a wasteful number, since it uses less digits than its factorization.

542185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2232 (or 2225 counting only the distinct ones).

The product of its digits is 1600, while the sum is 25.

The square root of 542185 is about 736.3321261496. The cubic root of 542185 is about 81.5422140700.

Subtracting 542185 from its reverse (581245), we obtain a triangular number (39060 = T₂₇₉).

It can be divided in two parts, 542 and 185, that added together give a palindrome (727).

The spelling of 542185 in words is "five hundred forty-two thousand, one hundred eighty-five".