995121005 has 4 divisors (see below), whose sum is σ = 1194145212. Its totient is φ = 796096800.

The previous prime is 995120909. The next prime is 995121037. The reversal of 995121005 is 500121599.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 205005124 + 790115881 = 14318^2 + 28109^2 .

It is not a de Polignac number, because 995121005 - 2¹⁰ = 995119981 is a prime.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 99512096 + ... + 99512105.

It is an arithmetic number, because the mean of its divisors is an integer number (298536303).

Almost surely, 2^995121005 is an apocalyptic number.

It is an amenable number.

995121005 is a deficient number, since it is larger than the sum of its proper divisors (199024207).

995121005 is a wasteful number, since it uses less digits than its factorization.

995121005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199024206.

The product of its (nonzero) digits is 4050, while the sum is 32.

The square root of 995121005 is about 31545.5385910591. The cubic root of 995121005 is about 998.3710161860.

The spelling of 995121005 in words is "nine hundred ninety-five million, one hundred twenty-one thousand, five".