3420424431121 has 4 divisors (see below), whose sum is σ = 3421069434432. Its totient is φ = 3419779427812.

The previous prime is 3420424431097. The next prime is 3420424431157. The reversal of 3420424431121 is 1211344240243.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3420424431121 - 2⁷ = 3420424430993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3420424431161) 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 3 ways as a sum of consecutive naturals, for example, 322493701 + ... + 322504306.

It is an arithmetic number, because the mean of its divisors is an integer number (855267358608).

Almost surely, 2^{3420424431121} is an apocalyptic number.

It is an amenable number.

3420424431121 is a deficient number, since it is larger than the sum of its proper divisors (645003311).

3420424431121 is an equidigital number, since it uses as much as digits as its factorization.

3420424431121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645003310.

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 3420424431121 its reverse (1211344240243), we get a palindrome (4631768671364).

The spelling of 3420424431121 in words is "three trillion, four hundred twenty billion, four hundred twenty-four million, four hundred thirty-one thousand, one hundred twenty-one".