542843 has 4 divisors (see below), whose sum is σ = 620400. Its totient is φ = 465288.

The previous prime is 542837. The next prime is 542873. The reversal of 542843 is 348245.

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 542843 - 2⁸ = 542587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (542873) 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, 38768 + ... + 38781.

It is an arithmetic number, because the mean of its divisors is an integer number (155100).

2⁵⁴²⁸⁴³ is an apocalyptic number.

542843 is a deficient number, since it is larger than the sum of its proper divisors (77557).

542843 is an equidigital number, since it uses as much as digits as its factorization.

542843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77556.

The product of its digits is 3840, while the sum is 26.

The square root of 542843 is about 736.7787999122. The cubic root of 542843 is about 81.5751874931.

The spelling of 542843 in words is "five hundred forty-two thousand, eight hundred forty-three".