1004430121 has 2 divisors, whose sum is σ = 1004430122. Its totient is φ = 1004430120.

The previous prime is 1004430107. The next prime is 1004430127. The reversal of 1004430121 is 1210344001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 971194896 + 33235225 = 31164^2 + 5765^2 .

It is an emirp because it is prime and its reverse (1210344001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1004430121 - 2⁹ = 1004429609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1004430095 and 1004430104.

It is not a weakly prime, because it can be changed into another prime (1004430127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 502215060 + 502215061.

It is an arithmetic number, because the mean of its divisors is an integer number (502215061).

Almost surely, 2^1004430121 is an apocalyptic number.

It is an amenable number.

1004430121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1004430121 is an equidigital number, since it uses as much as digits as its factorization.

1004430121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1004430121 is about 31692.7455579349. The cubic root of 1004430121 is about 1001.4745316876.

Adding to 1004430121 its reverse (1210344001), we get a palindrome (2214774122).

The spelling of 1004430121 in words is "one billion, four million, four hundred thirty thousand, one hundred twenty-one".