442423433 has 4 divisors (see below), whose sum is σ = 442648080. Its totient is φ = 442198788.

The previous prime is 442423409. The next prime is 442423439. The reversal of 442423433 is 334324244.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442423433 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 442423396 and 442423405.

It is not an unprimeable number, because it can be changed into a prime (442423439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109343 + ... + 113316.

It is an arithmetic number, because the mean of its divisors is an integer number (110662020).

Almost surely, 2^442423433 is an apocalyptic number.

It is an amenable number.

442423433 is a deficient number, since it is larger than the sum of its proper divisors (224647).

442423433 is a wasteful number, since it uses less digits than its factorization.

442423433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224646.

The product of its digits is 27648, while the sum is 29.

The square root of 442423433 is about 21033.8639579132. The cubic root of 442423433 is about 761.9843302946.

Adding to 442423433 its reverse (334324244), we get a palindrome (776747677).

The spelling of 442423433 in words is "four hundred forty-two million, four hundred twenty-three thousand, four hundred thirty-three".