1330330421 has 4 divisors (see below), whose sum is σ = 1520377632. Its totient is φ = 1140283212.

The previous prime is 1330330411. The next prime is 1330330423. The reversal of 1330330421 is 1240330331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1330330421 - 2⁶ = 1330330357 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1330330393 and 1330330402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1330330423) 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, 95023595 + ... + 95023608.

It is an arithmetic number, because the mean of its divisors is an integer number (380094408).

Almost surely, 2^1330330421 is an apocalyptic number.

It is an amenable number.

1330330421 is a deficient number, since it is larger than the sum of its proper divisors (190047211).

1330330421 is an equidigital number, since it uses as much as digits as its factorization.

1330330421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190047210.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 1330330421 is about 36473.6949183929. The cubic root of 1330330421 is about 1099.8155120353.

Adding to 1330330421 its reverse (1240330331), we get a palindrome (2570660752).

The spelling of 1330330421 in words is "one billion, three hundred thirty million, three hundred thirty thousand, four hundred twenty-one".