442313224 has 8 divisors (see below), whose sum is σ = 829337310. Its totient is φ = 221156608.

The previous prime is 442313197. The next prime is 442313227. The reversal of 442313224 is 422313244.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 345290724 + 97022500 = 18582^2 + 9850^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (442313227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27644569 + ... + 27644584.

Almost surely, 2^442313224 is an apocalyptic number.

It is an amenable number.

442313224 is a deficient number, since it is larger than the sum of its proper divisors (387024086).

442313224 is a wasteful number, since it uses less digits than its factorization.

442313224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55289159 (or 55289155 counting only the distinct ones).

The product of its digits is 4608, while the sum is 25.

The square root of 442313224 is about 21031.2439955415. The cubic root of 442313224 is about 761.9210541819.

Adding to 442313224 its reverse (422313244), we get a palindrome (864626468).

The spelling of 442313224 in words is "four hundred forty-two million, three hundred thirteen thousand, two hundred twenty-four".