442105323 has 12 divisors (see below), whose sum is σ = 647934504. Its totient is φ = 267942400.

The previous prime is 442105309. The next prime is 442105327. The reversal of 442105323 is 323501244.

It is not a de Polignac number, because 442105323 - 2⁶ = 442105259 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 442105293 and 442105302.

It is not an unprimeable number, because it can be changed into a prime (442105327) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 608598 + ... + 609323.

It is an arithmetic number, because the mean of its divisors is an integer number (53994542).

Almost surely, 2^442105323 is an apocalyptic number.

442105323 is a deficient number, since it is larger than the sum of its proper divisors (205829181).

442105323 is a wasteful number, since it uses less digits than its factorization.

442105323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1217946 (or 1217935 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 442105323 is about 21026.3007445437. The cubic root of 442105323 is about 761.8016599266.

Adding to 442105323 its reverse (323501244), we get a palindrome (765606567).

The spelling of 442105323 in words is "four hundred forty-two million, one hundred five thousand, three hundred twenty-three".