7942354050221 has 4 divisors (see below), whose sum is σ = 7942375333152. Its totient is φ = 7942332767292.

The previous prime is 7942354050151. The next prime is 7942354050247. The reversal of 7942354050221 is 1220504532497.

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 7942354050221 - 2¹⁰ = 7942354049197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7942354050821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10071521 + ... + 10831446.

It is an arithmetic number, because the mean of its divisors is an integer number (1985593833288).

Almost surely, 2^{7942354050221} is an apocalyptic number.

It is an amenable number.

7942354050221 is a deficient number, since it is larger than the sum of its proper divisors (21282931).

7942354050221 is a wasteful number, since it uses less digits than its factorization.

7942354050221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21282930.

The product of its (nonzero) digits is 604800, while the sum is 44.

The spelling of 7942354050221 in words is "seven trillion, nine hundred forty-two billion, three hundred fifty-four million, fifty thousand, two hundred twenty-one".