542066 has 16 divisors (see below), whose sum is σ = 960000. Its totient is φ = 224640.

The previous prime is 542063. The next prime is 542071. The reversal of 542066 is 660245.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542063) 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, 191 + ... + 1058.

It is an arithmetic number, because the mean of its divisors is an integer number (60000).

2⁵⁴²⁰⁶⁶ is an apocalyptic number.

542066 is a deficient number, since it is larger than the sum of its proper divisors (417934).

542066 is a wasteful number, since it uses less digits than its factorization.

542066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1289.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 542066 is about 736.2513157883. The cubic root of 542066 is about 81.5362479431.

The spelling of 542066 in words is "five hundred forty-two thousand, sixty-six".