99942065 has 8 divisors (see below), whose sum is σ = 126985320. Its totient is φ = 75250432.

The previous prime is 99942053. The next prime is 99942067. The reversal of 99942065 is 56024999.

It can be written as a sum of positive squares in 4 ways, for example, as 44528929 + 55413136 = 6673^2 + 7444^2 .

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

It is not a de Polignac number, because 99942065 - 2¹⁰ = 99941041 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (99942067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 587810 + ... + 587979.

It is an arithmetic number, because the mean of its divisors is an integer number (15873165).

Almost surely, 2^99942065 is an apocalyptic number.

It is an amenable number.

99942065 is a deficient number, since it is larger than the sum of its proper divisors (27043255).

99942065 is a wasteful number, since it uses less digits than its factorization.

99942065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1175811.

The product of its (nonzero) digits is 174960, while the sum is 44.

The square root of 99942065 is about 9997.1028303204. The cubic root of 99942065 is about 464.0692292290.

The spelling of 99942065 in words is "ninety-nine million, nine hundred forty-two thousand, sixty-five".