1123534530 has 256 divisors, whose sum is σ = 3284582400. Its totient is φ = 272643840.

The previous prime is 1123534523. The next prime is 1123534571. The reversal of 1123534530 is 354353211.

1123534530 is a `hidden beast` number, since 1 + 123 + 5 + 3 + 4 + 530 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 1123534494 and 1123534503.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 15824395 + ... + 15824465.

It is an arithmetic number, because the mean of its divisors is an integer number (12830400).

Almost surely, 2^1123534530 is an apocalyptic number.

1123534530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1123534530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1642291200).

1123534530 is an abundant number, since it is smaller than the sum of its proper divisors (2161047870).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1123534530 is a wasteful number, since it uses less digits than its factorization.

1123534530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206 (or 200 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 1123534530 is about 33519.1666065850. The cubic root of 1123534530 is about 1039.5901152279.

Adding to 1123534530 its reverse (354353211), we get a palindrome (1477887741).

The spelling of 1123534530 in words is "one billion, one hundred twenty-three million, five hundred thirty-four thousand, five hundred thirty".