442102423 has 8 divisors (see below), whose sum is σ = 508479392. Its totient is φ = 376530336.

The previous prime is 442102421. The next prime is 442102447. The reversal of 442102423 is 324201244.

It is a happy number.

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

It is not a de Polignac number, because 442102423 - 2¹ = 442102421 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 442102394 and 442102403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442102421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 200040 + ... + 202237.

It is an arithmetic number, because the mean of its divisors is an integer number (63559924).

Almost surely, 2^442102423 is an apocalyptic number.

442102423 is a deficient number, since it is larger than the sum of its proper divisors (66376969).

442102423 is a wasteful number, since it uses less digits than its factorization.

442102423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402441.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 442102423 is about 21026.2317831798. The cubic root of 442102423 is about 761.7999942379.

Adding to 442102423 its reverse (324201244), we get a palindrome (766303667).

The spelling of 442102423 in words is "four hundred forty-two million, one hundred two thousand, four hundred twenty-three".