994045121 has 4 divisors (see below), whose sum is σ = 994375044. Its totient is φ = 993715200.

The previous prime is 994045099. The next prime is 994045127. The reversal of 994045121 is 121540499.

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 915970225 + 78074896 = 30265^2 + 8836^2 .

It is a cyclic number.

It is not a de Polignac number, because 994045121 - 2²² = 989850817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (994045127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160400 + ... + 166481.

It is an arithmetic number, because the mean of its divisors is an integer number (248593761).

Almost surely, 2^994045121 is an apocalyptic number.

It is an amenable number.

994045121 is a deficient number, since it is larger than the sum of its proper divisors (329923).

994045121 is a wasteful number, since it uses less digits than its factorization.

994045121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329922.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 994045121 is about 31528.4811083566. The cubic root of 994045121 is about 998.0110871817.

The spelling of 994045121 in words is "nine hundred ninety-four million, forty-five thousand, one hundred twenty-one".