1330023421 has 2 divisors, whose sum is σ = 1330023422. Its totient is φ = 1330023420.

The previous prime is 1330023413. The next prime is 1330023451. The reversal of 1330023421 is 1243200331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1090980900 + 239042521 = 33030^2 + 15461^2 .

It is a cyclic number.

It is not a de Polignac number, because 1330023421 - 2³ = 1330023413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1330023451) 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 as a sum of consecutive naturals, namely, 665011710 + 665011711.

It is an arithmetic number, because the mean of its divisors is an integer number (665011711).

Almost surely, 2^1330023421 is an apocalyptic number.

It is an amenable number.

1330023421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1330023421 is an equidigital number, since it uses as much as digits as its factorization.

1330023421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 1330023421 is about 36469.4861630926. The cubic root of 1330023421 is about 1099.7309041482.

Adding to 1330023421 its reverse (1243200331), we get a palindrome (2573223752).

The spelling of 1330023421 in words is "one billion, three hundred thirty million, twenty-three thousand, four hundred twenty-one".