442458245 has 18 divisors (see below), whose sum is σ = 556398738. Its totient is φ = 337748928.

The previous prime is 442458241. The next prime is 442458253. The reversal of 442458245 is 542854244.

It can be written as a sum of positive squares in 3 ways, for example, as 231831076 + 210627169 = 15226^2 + 14513^2 .

It is not a de Polignac number, because 442458245 - 2² = 442458241 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 442458199 and 442458208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442458241) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1081601 + ... + 1082009.

It is an arithmetic number, because the mean of its divisors is an integer number (30911041).

Almost surely, 2^442458245 is an apocalyptic number.

It is an amenable number.

442458245 is a deficient number, since it is larger than the sum of its proper divisors (113940493).

442458245 is an frugal number, since it uses more digits than its factorization.

442458245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 869 (or 437 counting only the distinct ones).

The product of its digits is 204800, while the sum is 38.

The square root of 442458245 is about 21034.6914643405. The cubic root of 442458245 is about 762.0043152990.

The spelling of 442458245 in words is "four hundred forty-two million, four hundred fifty-eight thousand, two hundred forty-five".