442621361440 has 24 divisors (see below), whose sum is σ = 1045692966780. Its totient is φ = 177048544512.

The previous prime is 442621361393. The next prime is 442621361449. The reversal of 442621361440 is 44163126244.

It can be written as a sum of positive squares in 2 ways, for example, as 399641437584 + 42979923856 = 632172^2 + 207316^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 442621361440.

It is not an unprimeable number, because it can be changed into a prime (442621361449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1383191595 + ... + 1383191914.

Almost surely, 2^442621361440 is an apocalyptic number.

442621361440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

442621361440 is an abundant number, since it is smaller than the sum of its proper divisors (603071605340).

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

442621361440 is a wasteful number, since it uses less digits than its factorization.

442621361440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2766383524 (or 2766383516 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 37.

Adding to 442621361440 its reverse (44163126244), we get a palindrome (486784487684).

The spelling of 442621361440 in words is "four hundred forty-two billion, six hundred twenty-one million, three hundred sixty-one thousand, four hundred forty".