1530240433 has 4 divisors (see below), whose sum is σ = 1559112948. Its totient is φ = 1501367920.

The previous prime is 1530240401. The next prime is 1530240443. The reversal of 1530240433 is 3340420351.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3340420351 = 523 ⋅6387037.

It can be written as a sum of positive squares in 2 ways, for example, as 362788209 + 1167452224 = 19047^2 + 34168^2 .

It is a cyclic number.

It is not a de Polignac number, because 1530240433 - 2⁵ = 1530240401 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1530240398 and 1530240407.

It is not an unprimeable number, because it can be changed into a prime (1530240443) 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, 14436178 + ... + 14436283.

It is an arithmetic number, because the mean of its divisors is an integer number (389778237).

Almost surely, 2^1530240433 is an apocalyptic number.

It is an amenable number.

1530240433 is a deficient number, since it is larger than the sum of its proper divisors (28872515).

1530240433 is an equidigital number, since it uses as much as digits as its factorization.

1530240433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28872514.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 1530240433 is about 39118.2877053687. The cubic root of 1530240433 is about 1152.3557087894.

Adding to 1530240433 its reverse (3340420351), we get a palindrome (4870660784).

The spelling of 1530240433 in words is "one billion, five hundred thirty million, two hundred forty thousand, four hundred thirty-three".