99680042 has 72 divisors (see below), whose sum is σ = 199448928. Its totient is φ = 36566640.

The previous prime is 99680011. The next prime is 99680051. The reversal of 99680042 is 24008699.

It is a super-2 number, since 2×99680042² = 19872221546243528, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 99679978 and 99680005.

It is a congruent number.

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 611453 + ... + 611615.

It is an arithmetic number, because the mean of its divisors is an integer number (2770124).

Almost surely, 2^99680042 is an apocalyptic number.

99680042 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

99680042 is a wasteful number, since it uses less digits than its factorization.

99680042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232 (or 202 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 99680042 is about 9983.9892828468. The cubic root of 99680042 is about 463.6633166231.

The spelling of 99680042 in words is "ninety-nine million, six hundred eighty thousand, forty-two".