863542 has 8 divisors (see below), whose sum is σ = 1327032. Its totient is φ = 421200.

The previous prime is 863539. The next prime is 863561. The reversal of 863542 is 245368.

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

It is a d-powerful number, because it can be written as 8 + 6⁷ + 5 + 3¹⁰ + 4⁴ + 2¹⁹ .

It is a plaindrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 863542.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 5184 + ... + 5347.

It is an arithmetic number, because the mean of its divisors is an integer number (165879).

2⁸⁶³⁵⁴² is an apocalyptic number.

863542 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

863542 is a deficient number, since it is larger than the sum of its proper divisors (463490).

863542 is a wasteful number, since it uses less digits than its factorization.

863542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10574.

The product of its digits is 5760, while the sum is 28.

The square root of 863542 is about 929.2696056581. The cubic root of 863542 is about 95.2272307527.

The spelling of 863542 in words is "eight hundred sixty-three thousand, five hundred forty-two".