7420821421400 has 24 divisors (see below), whose sum is σ = 17253409805220. Its totient is φ = 2968328568480.

The previous prime is 7420821421393. The next prime is 7420821421417. The reversal of 7420821421400 is 41241280247.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18552053354 + ... + 18552053753.

Almost surely, 2^{7420821421400} is an apocalyptic number.

It is an amenable number.

7420821421400 is an abundant number, since it is smaller than the sum of its proper divisors (9832588383820).

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

7420821421400 is a wasteful number, since it uses less digits than its factorization.

7420821421400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37104107123 (or 37104107114 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 35.

The spelling of 7420821421400 in words is "seven trillion, four hundred twenty billion, eight hundred twenty-one million, four hundred twenty-one thousand, four hundred".