7242205043421 has 8 divisors (see below), whose sum is σ = 10729192656960. Its totient is φ = 4828136695596.

The previous prime is 7242205043413. The next prime is 7242205043449. The reversal of 7242205043421 is 1243405022427.

7242205043421 is a `hidden beast` number, since 7 + 2 + 4 + 220 + 5 + 0 + 4 + 3 + 421 = 666.

It is not a de Polignac number, because 7242205043421 - 2³ = 7242205043413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7242205043401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134114908185 + ... + 134114908238.

It is an arithmetic number, because the mean of its divisors is an integer number (1341149082120).

Almost surely, 2^{7242205043421} is an apocalyptic number.

It is an amenable number.

7242205043421 is a deficient number, since it is larger than the sum of its proper divisors (3486987613539).

7242205043421 is a wasteful number, since it uses less digits than its factorization.

7242205043421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268229816432 (or 268229816426 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 36.

The spelling of 7242205043421 in words is "seven trillion, two hundred forty-two billion, two hundred five million, forty-three thousand, four hundred twenty-one".