321224042 has 4 divisors (see below), whose sum is σ = 481836066. Its totient is φ = 160612020.

The previous prime is 321224023. The next prime is 321224069. The reversal of 321224042 is 240422123.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 240422123 = 6607 ⋅36389.

It can be written as a sum of positive squares in only one way, i.e., 191241241 + 129982801 = 13829^2 + 11401^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80306009 + ... + 80306012.

Almost surely, 2^321224042 is an apocalyptic number.

321224042 is a deficient number, since it is larger than the sum of its proper divisors (160612024).

321224042 is a wasteful number, since it uses less digits than its factorization.

321224042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160612023.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 321224042 is about 17922.7241790973. The cubic root of 321224042 is about 684.8613866969.

Adding to 321224042 its reverse (240422123), we get a palindrome (561646165).

The spelling of 321224042 in words is "three hundred twenty-one million, two hundred twenty-four thousand, forty-two".