1230542500 has 120 divisors (see below), whose sum is σ = 3038777280. Its totient is φ = 431760000.

The previous prime is 1230542491. The next prime is 1230542503. The reversal of 1230542500 is 52450321.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (1230542503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 796729 + ... + 798271.

It is an arithmetic number, because the mean of its divisors is an integer number (25323144).

Almost surely, 2^1230542500 is an apocalyptic number.

1230542500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1230542500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1519388640).

1230542500 is an abundant number, since it is smaller than the sum of its proper divisors (1808234780).

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

1230542500 is a wasteful number, since it uses less digits than its factorization.

1230542500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1607 (or 1590 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 1230542500 is about 35079.0892128060. The cubic root of 1230542500 is about 1071.5987687298.

Adding to 1230542500 its reverse (52450321), we get a palindrome (1282992821).

The spelling of 1230542500 in words is "one billion, two hundred thirty million, five hundred forty-two thousand, five hundred".