99994042 has 8 divisors (see below), whose sum is σ = 150057396. Its totient is φ = 49974912.

The previous prime is 99994021. The next prime is 99994043. The reversal of 99994042 is 24049999.

It can be written as a sum of positive squares in 2 ways, for example, as 97594641 + 2399401 = 9879^2 + 1549^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 99993983 and 99994001.

It is not an unprimeable number, because it can be changed into a prime (99994043) 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, 4663 + ... + 14890.

Almost surely, 2^99994042 is an apocalyptic number.

99994042 is a deficient number, since it is larger than the sum of its proper divisors (50063354).

99994042 is a wasteful number, since it uses less digits than its factorization.

99994042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22112.

The product of its (nonzero) digits is 209952, while the sum is 46.

The square root of 99994042 is about 9999.7020955626. The cubic root of 99994042 is about 464.1496649828.

It can be divided in two parts, 9999 and 4042, that added together give a palindrome (14041).

The spelling of 99994042 in words is "ninety-nine million, nine hundred ninety-four thousand, forty-two".