321535242 has 24 divisors (see below), whose sum is σ = 796182816. Its totient is φ = 91867176.

The previous prime is 321535231. The next prime is 321535273. The reversal of 321535242 is 242535123.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1275808 + ... + 1276059.

It is an arithmetic number, because the mean of its divisors is an integer number (33174284).

Almost surely, 2^321535242 is an apocalyptic number.

321535242 is an abundant number, since it is smaller than the sum of its proper divisors (474647574).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

321535242 is a wasteful number, since it uses less digits than its factorization.

321535242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2551882 (or 2551879 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 321535242 is about 17931.4037933453. The cubic root of 321535242 is about 685.0824785692.

The spelling of 321535242 in words is "three hundred twenty-one million, five hundred thirty-five thousand, two hundred forty-two".