324400442 has 4 divisors (see below), whose sum is σ = 486600666. Its totient is φ = 162200220.

The previous prime is 324400429. The next prime is 324400469. The reversal of 324400442 is 244004423.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 244004423 = 13 ⋅18769571.

It can be written as a sum of positive squares in only one way, i.e., 190743721 + 133656721 = 13811^2 + 11561^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81100109 + ... + 81100112.

Almost surely, 2^324400442 is an apocalyptic number.

324400442 is a deficient number, since it is larger than the sum of its proper divisors (162200224).

324400442 is a wasteful number, since it uses less digits than its factorization.

324400442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162200223.

The product of its (nonzero) digits is 3072, while the sum is 23.

The square root of 324400442 is about 18011.1199540728. The cubic root of 324400442 is about 687.1113868550. Note that the first 3 decimals are identical.

Adding to 324400442 its reverse (244004423), we get a palindrome (568404865).

The spelling of 324400442 in words is "three hundred twenty-four million, four hundred thousand, four hundred forty-two".