321534442 has 4 divisors (see below), whose sum is σ = 482301666. Its totient is φ = 160767220.

The previous prime is 321534431. The next prime is 321534443. The reversal of 321534442 is 244435123.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 277855561 + 43678881 = 16669^2 + 6609^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 321534442.

It is not an unprimeable number, because it can be changed into a prime (321534443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80383609 + ... + 80383612.

Almost surely, 2^321534442 is an apocalyptic number.

321534442 is a deficient number, since it is larger than the sum of its proper divisors (160767224).

321534442 is a wasteful number, since it uses less digits than its factorization.

321534442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160767223.

The product of its digits is 11520, while the sum is 28.

The square root of 321534442 is about 17931.3814860986. The cubic root of 321534442 is about 685.0819103925.

Adding to 321534442 its reverse (244435123), we get a palindrome (565969565).

The spelling of 321534442 in words is "three hundred twenty-one million, five hundred thirty-four thousand, four hundred forty-two".