942197621 has 2 divisors, whose sum is σ = 942197622. Its totient is φ = 942197620.

The previous prime is 942197611. The next prime is 942197623. The reversal of 942197621 is 126791249.

942197621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 854100625 + 88096996 = 29225^2 + 9386^2 .

It is a cyclic number.

It is not a de Polignac number, because 942197621 - 2¹⁰ = 942196597 is a prime.

Together with 942197623, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (942197623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 471098810 + 471098811.

It is an arithmetic number, because the mean of its divisors is an integer number (471098811).

Almost surely, 2^942197621 is an apocalyptic number.

It is an amenable number.

942197621 is a deficient number, since it is larger than the sum of its proper divisors (1).

942197621 is an equidigital number, since it uses as much as digits as its factorization.

942197621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 41.

The square root of 942197621 is about 30695.2377576718. The cubic root of 942197621 is about 980.3489042965.

The spelling of 942197621 in words is "nine hundred forty-two million, one hundred ninety-seven thousand, six hundred twenty-one".