1230538 has 4 divisors (see below), whose sum is σ = 1845810. Its totient is φ = 615268.

The previous prime is 1230529. The next prime is 1230539. The reversal of 1230538 is 8350321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8350321 = 7 ⋅1192903.

It can be written as a sum of positive squares in only one way, i.e., 1034289 + 196249 = 1017^2 + 443^2 .

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 as a sum of consecutive naturals, namely, 307633 + ... + 307636.

2^1230538 is an apocalyptic number.

1230538 is a deficient number, since it is larger than the sum of its proper divisors (615272).

1230538 is an equidigital number, since it uses as much as digits as its factorization.

1230538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615271.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1230538 is about 1109.2961732558. The cubic root of 1230538 is about 107.1597462477.

Adding to 1230538 its reverse (8350321), we get a palindrome (9580859).

The spelling of 1230538 in words is "one million, two hundred thirty thousand, five hundred thirty-eight".