942944828521 has 2 divisors, whose sum is σ = 942944828522. Its totient is φ = 942944828520.

The previous prime is 942944828519. The next prime is 942944828531. The reversal of 942944828521 is 125828449249.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 701136600921 + 241808227600 = 837339^2 + 491740^2 .

It is an emirp because it is prime and its reverse (125828449249) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 942944828521 - 2¹ = 942944828519 is a prime.

Together with 942944828519, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (942944828531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 471472414260 + 471472414261.

It is an arithmetic number, because the mean of its divisors is an integer number (471472414261).

Almost surely, 2^942944828521 is an apocalyptic number.

It is an amenable number.

942944828521 is a deficient number, since it is larger than the sum of its proper divisors (1).

942944828521 is an equidigital number, since it uses as much as digits as its factorization.

942944828521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13271040, while the sum is 58.

The spelling of 942944828521 in words is "nine hundred forty-two billion, nine hundred forty-four million, eight hundred twenty-eight thousand, five hundred twenty-one".