99942028 has 12 divisors (see below), whose sum is σ = 174968640. Its totient is φ = 49950992.

The previous prime is 99942023. The next prime is 99942053. The reversal of 99942028 is 82024999.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (99942023) 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 in 3 ways as a sum of consecutive naturals, for example, 16293 + ... + 21571.

It is an arithmetic number, because the mean of its divisors is an integer number (14580720).

Almost surely, 2^99942028 is an apocalyptic number.

It is an amenable number.

99942028 is a deficient number, since it is larger than the sum of its proper divisors (75026612).

99942028 is a wasteful number, since it uses less digits than its factorization.

99942028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10016 (or 10014 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 99942028 is about 9997.1009797841. The cubic root of 99942028 is about 464.0691719606.

The spelling of 99942028 in words is "ninety-nine million, nine hundred forty-two thousand, twenty-eight".