442343120521 has 8 divisors (see below), whose sum is σ = 447735968064. Its totient is φ = 436951782960.

The previous prime is 442343120467. The next prime is 442343120539. The reversal of 442343120521 is 125021343244.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 442343120521 - 2⁷ = 442343120393 is a prime.

It is a super-2 number, since 2×442343120521² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442343120561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 217651 + ... + 965431.

It is an arithmetic number, because the mean of its divisors is an integer number (55966996008).

Almost surely, 2^442343120521 is an apocalyptic number.

It is an amenable number.

442343120521 is a deficient number, since it is larger than the sum of its proper divisors (5392847543).

442343120521 is an equidigital number, since it uses as much as digits as its factorization.

442343120521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 754991.

The product of its (nonzero) digits is 23040, while the sum is 31.

Adding to 442343120521 its reverse (125021343244), we get a palindrome (567364463765).

The spelling of 442343120521 in words is "four hundred forty-two billion, three hundred forty-three million, one hundred twenty thousand, five hundred twenty-one".