442423105 has 8 divisors (see below), whose sum is σ = 531844200. Its totient is φ = 353314176.

The previous prime is 442423067. The next prime is 442423109. The reversal of 442423105 is 501324244.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 20367169 + 422055936 = 4513^2 + 20544^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 442423105 - 2⁹ = 442422593 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 442423105.

It is not an unprimeable number, because it can be changed into a prime (442423109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74910 + ... + 80599.

It is an arithmetic number, because the mean of its divisors is an integer number (66480525).

Almost surely, 2^442423105 is an apocalyptic number.

It is an amenable number.

442423105 is a deficient number, since it is larger than the sum of its proper divisors (89421095).

442423105 is a wasteful number, since it uses less digits than its factorization.

442423105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156083.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 442423105 is about 21033.8561609611. The cubic root of 442423105 is about 761.9841419901.

Adding to 442423105 its reverse (501324244), we get a palindrome (943747349).

The spelling of 442423105 in words is "four hundred forty-two million, four hundred twenty-three thousand, one hundred five".