542811 has 16 divisors (see below), whose sum is σ = 777600. Its totient is φ = 335808.

The previous prime is 542797. The next prime is 542821. The reversal of 542811 is 118245.

It is not a de Polignac number, because 542811 - 2⁶ = 542747 is a prime.

542811 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542821) 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, 5020 + ... + 5126.

It is an arithmetic number, because the mean of its divisors is an integer number (48600).

2⁵⁴²⁸¹¹ is an apocalyptic number.

542811 is a deficient number, since it is larger than the sum of its proper divisors (234789).

542811 is a wasteful number, since it uses less digits than its factorization.

542811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218.

The product of its digits is 320, while the sum is 21.

The square root of 542811 is about 736.7570834407. The cubic root of 542811 is about 81.5735845389.

The spelling of 542811 in words is "five hundred forty-two thousand, eight hundred eleven".