94842421 has 2 divisors, whose sum is σ = 94842422. Its totient is φ = 94842420.

The previous prime is 94842413. The next prime is 94842467. The reversal of 94842421 is 12424849.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 92910321 + 1932100 = 9639^2 + 1390^2 .

It is an emirp because it is prime and its reverse (12424849) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 94842421 - 2³ = 94842413 is a prime.

It is a super-2 number, since 2×94842421² = 17990169642282482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (94842481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47421210 + 47421211.

It is an arithmetic number, because the mean of its divisors is an integer number (47421211).

Almost surely, 2^94842421 is an apocalyptic number.

It is an amenable number.

94842421 is a deficient number, since it is larger than the sum of its proper divisors (1).

94842421 is an equidigital number, since it uses as much as digits as its factorization.

94842421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18432, while the sum is 34.

The square root of 94842421 is about 9738.7073577554. The cubic root of 94842421 is about 456.0378370291.

The spelling of 94842421 in words is "ninety-four million, eight hundred forty-two thousand, four hundred twenty-one".