442420004 has 24 divisors (see below), whose sum is σ = 845220600. Its totient is φ = 201394944.

The previous prime is 442419983. The next prime is 442420009. The reversal of 442420004 is 400024244.

It can be written as a sum of positive squares in 4 ways, for example, as 16080100 + 426339904 = 4010^2 + 20648^2 .

It is not an unprimeable number, because it can be changed into a prime (442420009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54479 + ... + 62070.

It is an arithmetic number, because the mean of its divisors is an integer number (35217525).

Almost surely, 2^442420004 is an apocalyptic number.

It is an amenable number.

442420004 is a deficient number, since it is larger than the sum of its proper divisors (402800596).

442420004 is a wasteful number, since it uses less digits than its factorization.

442420004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116639 (or 116637 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

The square root of 442420004 is about 21033.7824463409. The cubic root of 442420004 is about 761.9823617046.

Adding to 442420004 its reverse (400024244), we get a palindrome (842444248).

The spelling of 442420004 in words is "four hundred forty-two million, four hundred twenty thousand, four".