99999042 has 32 divisors (see below), whose sum is σ = 234964800. Its totient is φ = 27971520.

The previous prime is 99998999. The next prime is 99999043. The reversal of 99999042 is 24099999.

It is not an unprimeable number, because it can be changed into a prime (99999043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57417 + ... + 59132.

It is an arithmetic number, because the mean of its divisors is an integer number (7342650).

Almost surely, 2^99999042 is an apocalyptic number.

99999042 is an abundant number, since it is smaller than the sum of its proper divisors (134965758).

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

99999042 is a wasteful number, since it uses less digits than its factorization.

99999042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116578.

The product of its (nonzero) digits is 472392, while the sum is 51.

The square root of 99999042 is about 9999.9520998853. The cubic root of 99999042 is about 464.1574011425.

The spelling of 99999042 in words is "ninety-nine million, nine hundred ninety-nine thousand, forty-two".