442332423 has 12 divisors (see below), whose sum is σ = 688072840. Its totient is φ = 272204496.

The previous prime is 442332421. The next prime is 442332467. The reversal of 442332423 is 324233244.

442332423 is a `hidden beast` number, since 4 + 4 + 233 + 2 + 423 = 666.

It is not a de Polignac number, because 442332423 - 2¹ = 442332421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442332421) 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, 1890193 + ... + 1890426.

Almost surely, 2^442332423 is an apocalyptic number.

442332423 is a deficient number, since it is larger than the sum of its proper divisors (245740417).

442332423 is a wasteful number, since it uses less digits than its factorization.

442332423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3780638 (or 3780635 counting only the distinct ones).

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

The square root of 442332423 is about 21031.7004305406. The cubic root of 442332423 is about 761.9320779767.

Adding to 442332423 its reverse (324233244), we get a palindrome (766565667).

It can be divided in two parts, 44233 and 2423, that added together give a 6-th power (46656 = 6⁶).

The spelling of 442332423 in words is "four hundred forty-two million, three hundred thirty-two thousand, four hundred twenty-three".