1004322421 has 2 divisors, whose sum is σ = 1004322422. Its totient is φ = 1004322420.

The previous prime is 1004322359. The next prime is 1004322427. The reversal of 1004322421 is 1242234001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 745563025 + 258759396 = 27305^2 + 16086^2 .

It is an emirp because it is prime and its reverse (1242234001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1004322421 - 2²¹ = 1002225269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1004322427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 502161210 + 502161211.

It is an arithmetic number, because the mean of its divisors is an integer number (502161211).

Almost surely, 2^1004322421 is an apocalyptic number.

It is an amenable number.

1004322421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1004322421 is an equidigital number, since it uses as much as digits as its factorization.

1004322421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1004322421 is about 31691.0463853752. The cubic root of 1004322421 is about 1001.4387360459.

Adding to 1004322421 its reverse (1242234001), we get a palindrome (2246556422).

The spelling of 1004322421 in words is "one billion, four million, three hundred twenty-two thousand, four hundred twenty-one".