442398042248 has 12 divisors (see below), whose sum is σ = 829499856615. Its totient is φ = 221198080488.

The previous prime is 442398042239. The next prime is 442398042263. The reversal of 442398042248 is 842240893244.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 221199021124 + 221199021124 = 470318^2 + 470318^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=470318.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 442398042196 and 442398042205.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1763693 + ... + 1998851.

Almost surely, 2^442398042248 is an apocalyptic number.

It is an amenable number.

442398042248 is a deficient number, since it is larger than the sum of its proper divisors (387101814367).

442398042248 is an frugal number, since it uses more digits than its factorization.

442398042248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470324 (or 235161 counting only the distinct ones).

The product of its (nonzero) digits is 3538944, while the sum is 50.

Multiplying 442398042248 by its sum of digits (50), we get a square (22119902112400 = 4703180²).

The spelling of 442398042248 in words is "four hundred forty-two billion, three hundred ninety-eight million, forty-two thousand, two hundred forty-eight".