542685 has 48 divisors (see below), whose sum is σ = 1072512. Its totient is φ = 232320.

The previous prime is 542683. The next prime is 542687. The reversal of 542685 is 586245.

It is an interprime number because it is at equal distance from previous prime (542683) and next prime (542687).

It is not a de Polignac number, because 542685 - 2¹ = 542683 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 23584 + ... + 23606.

It is an arithmetic number, because the mean of its divisors is an integer number (22344).

2⁵⁴²⁶⁸⁵ is an apocalyptic number.

542685 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

542685 is a deficient number, since it is larger than the sum of its proper divisors (529827).

542685 is a wasteful number, since it uses less digits than its factorization.

542685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66 (or 55 counting only the distinct ones).

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

The square root of 542685 is about 736.6715686111. The cubic root of 542685 is about 81.5672722946.

The spelling of 542685 in words is "five hundred forty-two thousand, six hundred eighty-five".