542817 has 12 divisors (see below), whose sum is σ = 855504. Its totient is φ = 328920.

The previous prime is 542797. The next prime is 542821. The reversal of 542817 is 718245.

It is not a de Polignac number, because 542817 - 2¹¹ = 540769 is a prime.

542817 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 542817.

It is not an unprimeable number, because it can be changed into a prime (542837) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2643 + ... + 2840.

It is an arithmetic number, because the mean of its divisors is an integer number (71292).

2⁵⁴²⁸¹⁷ is an apocalyptic number.

It is an amenable number.

542817 is a deficient number, since it is larger than the sum of its proper divisors (312687).

542817 is a wasteful number, since it uses less digits than its factorization.

542817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5500 (or 5497 counting only the distinct ones).

The product of its digits is 2240, while the sum is 27.

The square root of 542817 is about 736.7611553278. The cubic root of 542817 is about 81.5738850976.

It can be divided in two parts, 5428 and 17, that added together give a palindrome (5445).

The spelling of 542817 in words is "five hundred forty-two thousand, eight hundred seventeen".