42242441133421 has 2 divisors, whose sum is σ = 42242441133422. Its totient is φ = 42242441133420.

The previous prime is 42242441133413. The next prime is 42242441133443. The reversal of 42242441133421 is 12433114424224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29315619072100 + 12926822061321 = 5414390^2 + 3595389^2 .

It is a cyclic number.

It is not a de Polignac number, because 42242441133421 - 2³ = 42242441133413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42242441113421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21121220566710 + 21121220566711.

It is an arithmetic number, because the mean of its divisors is an integer number (21121220566711).

Almost surely, 2^{42242441133421} is an apocalyptic number.

It is an amenable number.

42242441133421 is a deficient number, since it is larger than the sum of its proper divisors (1).

42242441133421 is an equidigital number, since it uses as much as digits as its factorization.

42242441133421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 147456, while the sum is 37.

Adding to 42242441133421 its reverse (12433114424224), we get a palindrome (54675555557645).

The spelling of 42242441133421 in words is "forty-two trillion, two hundred forty-two billion, four hundred forty-one million, one hundred thirty-three thousand, four hundred twenty-one".