99939042 has 64 divisors (see below), whose sum is σ = 254822400. Its totient is φ = 28440720.

The previous prime is 99939041. The next prime is 99939053. The reversal of 99939042 is 24093999.

It is not an unprimeable number, because it can be changed into a prime (99939041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 158067 + ... + 158697.

It is an arithmetic number, because the mean of its divisors is an integer number (3981600).

Almost surely, 2^99939042 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99939042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127411200).

99939042 is an abundant number, since it is smaller than the sum of its proper divisors (154883358).

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

99939042 is a wasteful number, since it uses less digits than its factorization.

99939042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1068 (or 1062 counting only the distinct ones).

The product of its (nonzero) digits is 157464, while the sum is 45.

The square root of 99939042 is about 9996.9516353737. The cubic root of 99939042 is about 464.0645502001.

The spelling of 99939042 in words is "ninety-nine million, nine hundred thirty-nine thousand, forty-two".