442005020342521 has 8 divisors (see below), whose sum is σ = 443953030457664. Its totient is φ = 440057017696560.

The previous prime is 442005020342513. The next prime is 442005020342531. The reversal of 442005020342521 is 125243020500244.

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 442005020342521 - 2³ = 442005020342513 is a prime.

It is a super-4 number, since 4×442005020342521⁴ (a number of 60 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442005020342531) 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, 140669076 + ... + 143776906.

It is an arithmetic number, because the mean of its divisors is an integer number (55494128807208).

Almost surely, 2^{442005020342521} is an apocalyptic number.

It is an amenable number.

442005020342521 is a deficient number, since it is larger than the sum of its proper divisors (1948010115143).

442005020342521 is a wasteful number, since it uses less digits than its factorization.

442005020342521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3734591.

The product of its (nonzero) digits is 76800, while the sum is 34.

Adding to 442005020342521 its reverse (125243020500244), we get a palindrome (567248040842765).

The spelling of 442005020342521 in words is "four hundred forty-two trillion, five billion, twenty million, three hundred forty-two thousand, five hundred twenty-one".