321542 has 16 divisors (see below), whose sum is σ = 529200. Its totient is φ = 145632.

The previous prime is 321509. The next prime is 321547. The reversal of 321542 is 245123.

321542 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 321542.

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 321542.

It is not an unprimeable number, because it can be changed into a prime (321547) 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 in 7 ways as a sum of consecutive naturals, for example, 2084 + ... + 2232.

It is an arithmetic number, because the mean of its divisors is an integer number (33075).

2³²¹⁵⁴² is an apocalyptic number.

321542 is a deficient number, since it is larger than the sum of its proper divisors (207658).

321542 is a wasteful number, since it uses less digits than its factorization.

321542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247.

The product of its digits is 240, while the sum is 17.

The square root of 321542 is about 567.0467352873. The cubic root of 321542 is about 68.5087278204.

Adding to 321542 its reverse (245123), we get a palindrome (566665).

The spelling of 321542 in words is "three hundred twenty-one thousand, five hundred forty-two".