542611 has 4 divisors (see below), whose sum is σ = 544824. Its totient is φ = 540400.

The previous prime is 542603. The next prime is 542683. The reversal of 542611 is 116245.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 542611 - 2³ = 542603 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 685 + ... + 1246.

It is an arithmetic number, because the mean of its divisors is an integer number (136206).

2⁵⁴²⁶¹¹ is an apocalyptic number.

542611 is a deficient number, since it is larger than the sum of its proper divisors (2213).

542611 is a wasteful number, since it uses less digits than its factorization.

542611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2212.

The product of its digits is 240, while the sum is 19.

The square root of 542611 is about 736.6213409887. The cubic root of 542611 is about 81.5635646480.

Adding to 542611 its reverse (116245), we get a palindrome (658856).

The spelling of 542611 in words is "five hundred forty-two thousand, six hundred eleven".