542873 has 2 divisors, whose sum is σ = 542874. Its totient is φ = 542872.

The previous prime is 542837. The next prime is 542891. The reversal of 542873 is 378245.

It is a happy number.

Together with previous prime (542837) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 478864 + 64009 = 692^2 + 253^2 .

It is a cyclic number.

It is not a de Polignac number, because 542873 - 2¹² = 538777 is a prime.

It is a super-2 number, since 2×542873² = 589422188258, which contains 22 as substring.

It is a d-powerful number, because it can be written as 5² + 4⁵ + 8⁶ + 2¹⁸ + 7⁵ + 3⁶ .

It is not a weakly prime, because it can be changed into another prime (545873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271436 + 271437.

It is an arithmetic number, because the mean of its divisors is an integer number (271437).

2⁵⁴²⁸⁷³ is an apocalyptic number.

It is an amenable number.

542873 is a deficient number, since it is larger than the sum of its proper divisors (1).

542873 is an equidigital number, since it uses as much as digits as its factorization.

542873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6720, while the sum is 29.

The square root of 542873 is about 736.7991585229. The cubic root of 542873 is about 81.5766902054.

The spelling of 542873 in words is "five hundred forty-two thousand, eight hundred seventy-three".