1000044121 has 4 divisors (see below), whose sum is σ = 1018912932. Its totient is φ = 981175312.

The previous prime is 1000044113. The next prime is 1000044131. The reversal of 1000044121 is 1214400001.

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 336208896 + 663835225 = 18336^2 + 25765^2 .

It is a cyclic number.

It is not a de Polignac number, because 1000044121 - 2³ = 1000044113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1000044131) 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, 9434326 + ... + 9434431.

It is an arithmetic number, because the mean of its divisors is an integer number (254728233).

Almost surely, 2^1000044121 is an apocalyptic number.

It is an amenable number.

1000044121 is a deficient number, since it is larger than the sum of its proper divisors (18868811).

1000044121 is an equidigital number, since it uses as much as digits as its factorization.

1000044121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18868810.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 1000044121 is about 31623.4742082523. The cubic root of 1000044121 is about 1000.0147067837.

Adding to 1000044121 its reverse (1214400001), we get a palindrome (2214444122).

The spelling of 1000044121 in words is "one billion, forty-four thousand, one hundred twenty-one".