1230533 has 4 divisors (see below), whose sum is σ = 1260588. Its totient is φ = 1200480.

The previous prime is 1230529. The next prime is 1230539. The reversal of 1230533 is 3350321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3350321 = 13 ⋅257717.

It can be written as a sum of positive squares in 2 ways, for example, as 16129 + 1214404 = 127^2 + 1102^2 .

It is not a de Polignac number, because 1230533 - 2² = 1230529 is a prime.

It is a super-2 number, since 2×1230533² = 3028422928178, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230539) 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, 14966 + ... + 15047.

It is an arithmetic number, because the mean of its divisors is an integer number (315147).

2^1230533 is an apocalyptic number.

It is an amenable number.

1230533 is a deficient number, since it is larger than the sum of its proper divisors (30055).

1230533 is an equidigital number, since it uses as much as digits as its factorization.

1230533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30054.

The product of its (nonzero) digits is 270, while the sum is 17.

The square root of 1230533 is about 1109.2939195723. The cubic root of 1230533 is about 107.1596011080.

Adding to 1230533 its reverse (3350321), we get a palindrome (4580854).

The spelling of 1230533 in words is "one million, two hundred thirty thousand, five hundred thirty-three".