9942271 has 2 divisors, whose sum is σ = 9942272. Its totient is φ = 9942270.

The previous prime is 9942269. The next prime is 9942277. The reversal of 9942271 is 1722499.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9942271 - 2¹ = 9942269 is a prime.

Together with 9942269, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9942277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4971135 + 4971136.

It is an arithmetic number, because the mean of its divisors is an integer number (4971136).

Almost surely, 2^9942271 is an apocalyptic number.

9942271 is a deficient number, since it is larger than the sum of its proper divisors (1).

9942271 is an equidigital number, since it uses as much as digits as its factorization.

9942271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 34.

The square root of 9942271 is about 3153.1366922479. The cubic root of 9942271 is about 215.0280907951.

The spelling of 9942271 in words is "nine million, nine hundred forty-two thousand, two hundred seventy-one".