442686245 has 8 divisors (see below), whose sum is σ = 531336480. Its totient is φ = 354073680.

The previous prime is 442686203. The next prime is 442686259. The reversal of 442686245 is 542686244.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 442686245 - 2¹⁶ = 442620709 is a prime.

It is a super-2 number, since 2×442686245² = 391942223024400050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40586 + ... + 50324.

It is an arithmetic number, because the mean of its divisors is an integer number (66417060).

Almost surely, 2^442686245 is an apocalyptic number.

It is an amenable number.

442686245 is a deficient number, since it is larger than the sum of its proper divisors (88650235).

442686245 is an equidigital number, since it uses as much as digits as its factorization.

442686245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18835.

The product of its digits is 368640, while the sum is 41.

The square root of 442686245 is about 21040.1103846914. The cubic root of 442686245 is about 762.1351804914.

Subtracting 442686245 from its reverse (542686244), we obtain a palindrome (99999999).

The spelling of 442686245 in words is "four hundred forty-two million, six hundred eighty-six thousand, two hundred forty-five".