1530204421 has 4 divisors (see below), whose sum is σ = 1596735072. Its totient is φ = 1463673772.

The previous prime is 1530204397. The next prime is 1530204437. The reversal of 1530204421 is 1244020351.

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 1530204421 - 2⁷ = 1530204293 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1530204392 and 1530204401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1530204721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33265291 + ... + 33265336.

It is an arithmetic number, because the mean of its divisors is an integer number (399183768).

Almost surely, 2^1530204421 is an apocalyptic number.

It is an amenable number.

1530204421 is a deficient number, since it is larger than the sum of its proper divisors (66530651).

1530204421 is an equidigital number, since it uses as much as digits as its factorization.

1530204421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66530650.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 1530204421 is about 39117.8274064396. The cubic root of 1530204421 is about 1152.3466690423.

Adding to 1530204421 its reverse (1244020351), we get a palindrome (2774224772).

The spelling of 1530204421 in words is "one billion, five hundred thirty million, two hundred four thousand, four hundred twenty-one".