542166 has 16 divisors (see below), whose sum is σ = 1095600. Its totient is φ = 178848.

The previous prime is 542153. The next prime is 542167. The reversal of 542166 is 661245.

It is a Curzon number.

It is a nialpdrome in base 15.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 542166.

It is not an unprimeable number, because it can be changed into a prime (542167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 240 + ... + 1068.

It is an arithmetic number, because the mean of its divisors is an integer number (68475).

2⁵⁴²¹⁶⁶ is an apocalyptic number.

542166 is an abundant number, since it is smaller than the sum of its proper divisors (553434).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

542166 is a wasteful number, since it uses less digits than its factorization.

542166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 943.

The product of its digits is 1440, while the sum is 24.

The square root of 542166 is about 736.3192242499. The cubic root of 542166 is about 81.5412615537.

It can be divided in two parts, 54 and 2166, that multiplied together give a square (116964 = 342²).

The spelling of 542166 in words is "five hundred forty-two thousand, one hundred sixty-six".