942421813 has 2 divisors, whose sum is σ = 942421814. Its totient is φ = 942421812.

The previous prime is 942421789. The next prime is 942421819. The reversal of 942421813 is 318124249.

942421813 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., 913067089 + 29354724 = 30217^2 + 5418^2 .

It is a cyclic number.

It is not a de Polignac number, because 942421813 - 2¹³ = 942413621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (942421819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 471210906 + 471210907.

It is an arithmetic number, because the mean of its divisors is an integer number (471210907).

Almost surely, 2^942421813 is an apocalyptic number.

It is an amenable number.

942421813 is a deficient number, since it is larger than the sum of its proper divisors (1).

942421813 is an equidigital number, since it uses as much as digits as its factorization.

942421813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 34.

The square root of 942421813 is about 30698.8894424538. The cubic root of 942421813 is about 980.4266547763.

The spelling of 942421813 in words is "nine hundred forty-two million, four hundred twenty-one thousand, eight hundred thirteen".