542865 has 8 divisors (see below), whose sum is σ = 868608. Its totient is φ = 289520.

The previous prime is 542837. The next prime is 542873. The reversal of 542865 is 568245.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 542865 - 2¹⁶ = 477329 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 542865.

It is an unprimeable number.

It is an upside-down number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18081 + ... + 18110.

It is an arithmetic number, because the mean of its divisors is an integer number (108576).

2⁵⁴²⁸⁶⁵ is an apocalyptic number.

It is an amenable number.

542865 is a deficient number, since it is larger than the sum of its proper divisors (325743).

542865 is a wasteful number, since it uses less digits than its factorization.

542865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36199.

The product of its digits is 9600, while the sum is 30.

The square root of 542865 is about 736.7937296150. The cubic root of 542865 is about 81.5762894875.

The spelling of 542865 in words is "five hundred forty-two thousand, eight hundred sixty-five".