442423122 has 8 divisors (see below), whose sum is σ = 884846256. Its totient is φ = 147474372.

The previous prime is 442423109. The next prime is 442423139. The reversal of 442423122 is 221324244.

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

442423122 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 442423092 and 442423101.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 36868588 + ... + 36868599.

It is an arithmetic number, because the mean of its divisors is an integer number (110605782).

Almost surely, 2^442423122 is an apocalyptic number.

442423122 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

442423122 is a wasteful number, since it uses less digits than its factorization.

442423122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73737192.

The product of its digits is 3072, while the sum is 24.

The square root of 442423122 is about 21033.8565650715. The cubic root of 442423122 is about 761.9841517498.

Adding to 442423122 its reverse (221324244), we get a palindrome (663747366).

The spelling of 442423122 in words is "four hundred forty-two million, four hundred twenty-three thousand, one hundred twenty-two".