444421242 has 48 divisors (see below), whose sum is σ = 1057335552. Its totient is φ = 139423680.

The previous prime is 444421223. The next prime is 444421247. The reversal of 444421242 is 242124444.

444421242 is a `hidden beast` number, since 4 + 444 + 212 + 4 + 2 = 666.

It is a super-3 number, since 3×444421242³ (a number of 27 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (444421247) 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 23 ways as a sum of consecutive naturals, for example, 18634 + ... + 35157.

It is an arithmetic number, because the mean of its divisors is an integer number (22027824).

Almost surely, 2^444421242 is an apocalyptic number.

444421242 is an abundant number, since it is smaller than the sum of its proper divisors (612914310).

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

444421242 is a wasteful number, since it uses less digits than its factorization.

444421242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53825 (or 53813 counting only the distinct ones).

The product of its digits is 8192, while the sum is 27.

The square root of 444421242 is about 21081.3007663190. The cubic root of 444421242 is about 763.1295480535.

Adding to 444421242 its reverse (242124444), we get a palindrome (686545686).

The spelling of 444421242 in words is "four hundred forty-four million, four hundred twenty-one thousand, two hundred forty-two".