542985 has 16 divisors (see below), whose sum is σ = 886464. Its totient is φ = 283712.

The previous prime is 542981. The next prime is 542987. The reversal of 542985 is 589245.

It is a cyclic number.

It is not a de Polignac number, because 542985 - 2² = 542981 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 454 + ... + 1136.

It is an arithmetic number, because the mean of its divisors is an integer number (55404).

2⁵⁴²⁹⁸⁵ is an apocalyptic number.

It is an amenable number.

542985 is a deficient number, since it is larger than the sum of its proper divisors (343479).

542985 is a wasteful number, since it uses less digits than its factorization.

542985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 744.

The product of its digits is 14400, while the sum is 33.

The square root of 542985 is about 736.8751590331. The cubic root of 542985 is about 81.5822998421.

The spelling of 542985 in words is "five hundred forty-two thousand, nine hundred eighty-five".