442336345 has 64 divisors (see below), whose sum is σ = 651442176. Its totient is φ = 284359680.

The previous prime is 442336339. The next prime is 442336351. The reversal of 442336345 is 543633244.

It is an interprime number because it is at equal distance from previous prime (442336339) and next prime (442336351).

It is not a de Polignac number, because 442336345 - 2²³ = 433947737 is a prime.

It is a super-2 number, since 2×442336345² = 391322884215918050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 442336345.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1440682 + ... + 1440988.

It is an arithmetic number, because the mean of its divisors is an integer number (10178784).

Almost surely, 2^442336345 is an apocalyptic number.

It is an amenable number.

442336345 is a deficient number, since it is larger than the sum of its proper divisors (209105831).

442336345 is a wasteful number, since it uses less digits than its factorization.

442336345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430.

The product of its digits is 103680, while the sum is 34.

The square root of 442336345 is about 21031.7936705360. The cubic root of 442336345 is about 761.9343298945.

Adding to 442336345 its reverse (543633244), we get a palindrome (985969589).

The spelling of 442336345 in words is "four hundred forty-two million, three hundred thirty-six thousand, three hundred forty-five".