1004244121 has 4 divisors (see below), whose sum is σ = 1031385892. Its totient is φ = 977102352.

The previous prime is 1004244091. The next prime is 1004244139. The reversal of 1004244121 is 1214424001.

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 641912896 + 362331225 = 25336^2 + 19035^2 .

It is a cyclic number.

It is not a de Polignac number, because 1004244121 - 2⁹ = 1004243609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1004244181) 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, 13570830 + ... + 13570903.

It is an arithmetic number, because the mean of its divisors is an integer number (257846473).

Almost surely, 2^1004244121 is an apocalyptic number.

It is an amenable number.

1004244121 is a deficient number, since it is larger than the sum of its proper divisors (27141771).

1004244121 is an equidigital number, since it uses as much as digits as its factorization.

1004244121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27141770.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 1004244121 is about 31689.8109965964. The cubic root of 1004244121 is about 1001.4127103098.

Adding to 1004244121 its reverse (1214424001), we get a palindrome (2218668122).

The spelling of 1004244121 in words is "one billion, four million, two hundred forty-four thousand, one hundred twenty-one".