420021042441 has 48 divisors (see below), whose sum is σ = 765353066688. Its totient is φ = 201408681600.

The previous prime is 420021042433. The next prime is 420021042517. The reversal of 420021042441 is 144240120024.

It is not a de Polignac number, because 420021042441 - 2³ = 420021042433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (420021042041) 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 47 ways as a sum of consecutive naturals, for example, 9969490 + ... + 10011531.

It is an arithmetic number, because the mean of its divisors is an integer number (15944855556).

Almost surely, 2^420021042441 is an apocalyptic number.

It is an amenable number.

420021042441 is a deficient number, since it is larger than the sum of its proper divisors (345332024247).

420021042441 is a wasteful number, since it uses less digits than its factorization.

420021042441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19981062 (or 19981055 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 420021042441 its reverse (144240120024), we get a palindrome (564261162465).

The spelling of 420021042441 in words is "four hundred twenty billion, twenty-one million, forty-two thousand, four hundred forty-one".