1230442533 has 12 divisors (see below), whose sum is σ = 1797276780. Its totient is φ = 811077696.

The previous prime is 1230442531. The next prime is 1230442561. The reversal of 1230442533 is 3352440321.

1230442533 is a `hidden beast` number, since 1 + 230 + 4 + 425 + 3 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 687645729 + 542796804 = 26223^2 + 23298^2 .

It is not a de Polignac number, because 1230442533 - 2¹ = 1230442531 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1230442497 and 1230442506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230442531) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 767266 + ... + 768867.

It is an arithmetic number, because the mean of its divisors is an integer number (149773065).

Almost surely, 2^1230442533 is an apocalyptic number.

It is an amenable number.

1230442533 is a deficient number, since it is larger than the sum of its proper divisors (566834247).

1230442533 is a wasteful number, since it uses less digits than its factorization.

1230442533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1536228 (or 1536225 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

The square root of 1230442533 is about 35077.6643036563. The cubic root of 1230442533 is about 1071.5697497090.

Adding to 1230442533 its reverse (3352440321), we get a palindrome (4582882854).

The spelling of 1230442533 in words is "one billion, two hundred thirty million, four hundred forty-two thousand, five hundred thirty-three".