8221420088742 has 16 divisors (see below), whose sum is σ = 18791817345792. Its totient is φ = 2348977168200.

The previous prime is 8221420088719. The next prime is 8221420088807. The reversal of 8221420088742 is 2478800241228.

It is a junction number, because it is equal to n+sod(n) for n = 8221420088691 and 8221420088700.

It is a congruent number.

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, 97874048634 + ... + 97874048717.

It is an arithmetic number, because the mean of its divisors is an integer number (1174488584112).

Almost surely, 2^{8221420088742} is an apocalyptic number.

8221420088742 is an abundant number, since it is smaller than the sum of its proper divisors (10570397257050).

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

8221420088742 is a wasteful number, since it uses less digits than its factorization.

8221420088742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195748097363.

The product of its (nonzero) digits is 917504, while the sum is 48.

The spelling of 8221420088742 in words is "eight trillion, two hundred twenty-one billion, four hundred twenty million, eighty-eight thousand, seven hundred forty-two".