1330501421 has 4 divisors (see below), whose sum is σ = 1330808412. Its totient is φ = 1330194432.

The previous prime is 1330501363. The next prime is 1330501423. The reversal of 1330501421 is 1241050331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1241050331 = 29 ⋅42794839.

It can be written as a sum of positive squares in 2 ways, for example, as 950797225 + 379704196 = 30835^2 + 19486^2 .

It is a cyclic number.

It is not a de Polignac number, because 1330501421 - 2¹⁰ = 1330500397 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1330501393 and 1330501402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1330501423) 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 in 3 ways as a sum of consecutive naturals, for example, 146900 + ... + 155693.

It is an arithmetic number, because the mean of its divisors is an integer number (332702103).

Almost surely, 2^1330501421 is an apocalyptic number.

It is an amenable number.

1330501421 is a deficient number, since it is larger than the sum of its proper divisors (306991).

1330501421 is an equidigital number, since it uses as much as digits as its factorization.

1330501421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306990.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 1330501421 is about 36476.0389982246. The cubic root of 1330501421 is about 1099.8626332597.

Adding to 1330501421 its reverse (1241050331), we get a palindrome (2571551752).

The spelling of 1330501421 in words is "one billion, three hundred thirty million, five hundred one thousand, four hundred twenty-one".