9942151 has 2 divisors, whose sum is σ = 9942152. Its totient is φ = 9942150.

The previous prime is 9942143. The next prime is 9942167. The reversal of 9942151 is 1512499.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9942151 - 2³ = 9942143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9942181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4971075 + 4971076.

It is an arithmetic number, because the mean of its divisors is an integer number (4971076).

Almost surely, 2^9942151 is an apocalyptic number.

9942151 is a deficient number, since it is larger than the sum of its proper divisors (1).

9942151 is an equidigital number, since it uses as much as digits as its factorization.

9942151 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3240, while the sum is 31.

The square root of 9942151 is about 3153.1176635197. The cubic root of 9942151 is about 215.0272256851.

The spelling of 9942151 in words is "nine million, nine hundred forty-two thousand, one hundred fifty-one".