442013340021 has 16 divisors (see below), whose sum is σ = 642948185088. Its totient is φ = 267878668400.

The previous prime is 442013339959. The next prime is 442013340031. The reversal of 442013340021 is 120043310244.

It is a cyclic number.

It is not a de Polignac number, because 442013340021 - 2¹⁴ = 442013323637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 442013339973 and 442013340000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442013340031) 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 15 ways as a sum of consecutive naturals, for example, 993220 + ... + 1367666.

It is an arithmetic number, because the mean of its divisors is an integer number (40184261568).

Almost surely, 2^442013340021 is an apocalyptic number.

It is an amenable number.

442013340021 is a deficient number, since it is larger than the sum of its proper divisors (200934845067).

442013340021 is a wasteful number, since it uses less digits than its factorization.

442013340021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410232.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 442013340021 its reverse (120043310244), we get a palindrome (562056650265).

The spelling of 442013340021 in words is "four hundred forty-two billion, thirteen million, three hundred forty thousand, twenty-one".