442420444420 has 12 divisors (see below), whose sum is σ = 929082933324. Its totient is φ = 176968177760.

The previous prime is 442420444379. The next prime is 442420444429. The reversal of 442420444420 is 24444024244.

It can be written as a sum of positive squares in 2 ways, for example, as 66016108096 + 376404336324 = 256936^2 + 613518^2 .

It is not an unprimeable number, because it can be changed into a prime (442420444429) 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, 11060511091 + ... + 11060511130.

It is an arithmetic number, because the mean of its divisors is an integer number (77423577777).

Almost surely, 2^442420444420 is an apocalyptic number.

It is an amenable number.

442420444420 is an abundant number, since it is smaller than the sum of its proper divisors (486662488904).

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

442420444420 is a wasteful number, since it uses less digits than its factorization.

442420444420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22121022230 (or 22121022228 counting only the distinct ones).

The product of its (nonzero) digits is 131072, while the sum is 34.

Adding to 442420444420 its reverse (24444024244), we get a palindrome (466864468664).

The spelling of 442420444420 in words is "four hundred forty-two billion, four hundred twenty million, four hundred forty-four thousand, four hundred twenty".