442423323 has 16 divisors (see below), whose sum is σ = 658556800. Its totient is φ = 293547240.

The previous prime is 442423321. The next prime is 442423337. The reversal of 442423323 is 323324244.

442423323 is a `hidden beast` number, since 4 + 424 + 233 + 2 + 3 = 666.

It is not a de Polignac number, because 442423323 - 2¹ = 442423321 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442423321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33133 + ... + 44526.

It is an arithmetic number, because the mean of its divisors is an integer number (41159800).

Almost surely, 2^442423323 is an apocalyptic number.

442423323 is a deficient number, since it is larger than the sum of its proper divisors (216133477).

442423323 is a wasteful number, since it uses less digits than its factorization.

442423323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77879 (or 77873 counting only the distinct ones).

The product of its digits is 13824, while the sum is 27.

The square root of 442423323 is about 21033.8613430820. The cubic root of 442423323 is about 761.9842671437.

Adding to 442423323 its reverse (323324244), we get a palindrome (765747567).

The spelling of 442423323 in words is "four hundred forty-two million, four hundred twenty-three thousand, three hundred twenty-three".