321542052 has 48 divisors (see below), whose sum is σ = 810405120. Its totient is φ = 98638848.

The previous prime is 321542051. The next prime is 321542059. The reversal of 321542052 is 250245123.

It is not an unprimeable number, because it can be changed into a prime (321542051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52149 + ... + 57987.

It is an arithmetic number, because the mean of its divisors is an integer number (16883440).

Almost surely, 2^321542052 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 321542052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (405202560).

321542052 is an abundant number, since it is smaller than the sum of its proper divisors (488863068).

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

321542052 is a wasteful number, since it uses less digits than its factorization.

321542052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6212 (or 6210 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 321542052 is about 17931.5936826597. The cubic root of 321542052 is about 685.0873151346.

Adding to 321542052 its reverse (250245123), we get a palindrome (571787175).

The spelling of 321542052 in words is "three hundred twenty-one million, five hundred forty-two thousand, fifty-two".