9942111 has 24 divisors (see below), whose sum is σ = 15415920. Its totient is φ = 6155136.

The previous prime is 9942077. The next prime is 9942133. The reversal of 9942111 is 1112499.

It is not a de Polignac number, because 9942111 - 2⁶ = 9942047 is a prime.

It is a super-2 number, since 2×9942111² = 197691142272642, which contains 22 as substring.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9942151) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8515 + ... + 9611.

It is an arithmetic number, because the mean of its divisors is an integer number (642330).

Almost surely, 2^9942111 is an apocalyptic number.

9942111 is a deficient number, since it is larger than the sum of its proper divisors (5473809).

9942111 is a wasteful number, since it uses less digits than its factorization.

9942111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1175 (or 1172 counting only the distinct ones).

The product of its digits is 648, while the sum is 27.

The square root of 9942111 is about 3153.1113205848. Note that the first 3 decimals coincide. The cubic root of 9942111 is about 215.0269373135.

The spelling of 9942111 in words is "nine million, nine hundred forty-two thousand, one hundred eleven".