99015642 has 32 divisors (see below), whose sum is σ = 240039360. Its totient is φ = 30004560.

The previous prime is 99015619. The next prime is 99015649. The reversal of 99015642 is 24651099.

99015642 is a `hidden beast` number, since 9 + 9 + 0 + 1 + 5 + 642 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 99015597 and 99015606.

It is not an unprimeable number, because it can be changed into a prime (99015649) 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, 82753 + ... + 83940.

It is an arithmetic number, because the mean of its divisors is an integer number (7501230).

Almost surely, 2^99015642 is an apocalyptic number.

99015642 is an abundant number, since it is smaller than the sum of its proper divisors (141023718).

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

99015642 is a wasteful number, since it uses less digits than its factorization.

99015642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166715 (or 166709 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 99015642 is about 9950.6603800954. The cubic root of 99015642 is about 462.6308635776.

The spelling of 99015642 in words is "ninety-nine million, fifteen thousand, six hundred forty-two".