1044000121 has 4 divisors (see below), whose sum is σ = 1049299812. Its totient is φ = 1038700432.

The previous prime is 1044000101. The next prime is 1044000131. The reversal of 1044000121 is 1210004401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1210004401 = 23 ⋅52608887.

It can be written as a sum of positive squares in 2 ways, for example, as 1037548521 + 6451600 = 32211^2 + 2540^2 .

It is a cyclic number.

It is not a de Polignac number, because 1044000121 - 2²¹ = 1041902969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1044000101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2649550 + ... + 2649943.

It is an arithmetic number, because the mean of its divisors is an integer number (262324953).

Almost surely, 2^1044000121 is an apocalyptic number.

It is an amenable number.

1044000121 is a deficient number, since it is larger than the sum of its proper divisors (5299691).

1044000121 is an equidigital number, since it uses as much as digits as its factorization.

1044000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5299690.

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

The square root of 1044000121 is about 32310.9907152350. The cubic root of 1044000121 is about 1014.4567035889.

Adding to 1044000121 its reverse (1210004401), we get a palindrome (2254004522).

The spelling of 1044000121 in words is "one billion, forty-four million, one hundred twenty-one", and thus it is an aban number.