99000042 has 8 divisors (see below), whose sum is σ = 198000096. Its totient is φ = 33000012.

The previous prime is 99000037. The next prime is 99000047. The reversal of 99000042 is 24000099.

It is an interprime number because it is at equal distance from previous prime (99000037) and next prime (99000047).

It is a sphenic number, since it is the product of 3 distinct primes.

99000042 is an admirable number.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 98999976 and 99000021.

It is not an unprimeable number, because it can be changed into a prime (99000047) 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, 8249998 + ... + 8250009.

It is an arithmetic number, because the mean of its divisors is an integer number (24750012).

Almost surely, 2^99000042 is an apocalyptic number.

99000042 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99000042 is a wasteful number, since it uses less digits than its factorization.

99000042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16500012.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 99000042 is about 9949.8764816454. The cubic root of 99000042 is about 462.6065663374.

The spelling of 99000042 in words is "ninety-nine million, forty-two", and thus it is an aban number and an uban number.