21442050425420 has 24 divisors (see below), whose sum is σ = 45046167286848. Its totient is φ = 8573418000000.

The previous prime is 21442050425417. The next prime is 21442050425507. The reversal of 21442050425420 is 2452405024412.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 212583956 + ... + 212684795.

It is an arithmetic number, because the mean of its divisors is an integer number (1876923636952).

Almost surely, 2^{21442050425420} is an apocalyptic number.

21442050425420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21442050425420 is an abundant number, since it is smaller than the sum of its proper divisors (23604116861428).

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

21442050425420 is a wasteful number, since it uses less digits than its factorization.

21442050425420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425271281 (or 425271279 counting only the distinct ones).

The product of its (nonzero) digits is 102400, while the sum is 35.

Adding to 21442050425420 its reverse (2452405024412), we get a palindrome (23894455449832).

The spelling of 21442050425420 in words is "twenty-one trillion, four hundred forty-two billion, fifty million, four hundred twenty-five thousand, four hundred twenty".