1230443120 has 40 divisors (see below), whose sum is σ = 2864819616. Its totient is φ = 491482368.

The previous prime is 1230443111. The next prime is 1230443143. The reversal of 1230443120 is 213440321.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1230443092 and 1230443101.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 48149 + ... + 69131.

Almost surely, 2^1230443120 is an apocalyptic number.

1230443120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1230443120 is an abundant number, since it is smaller than the sum of its proper divisors (1634376496).

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

1230443120 is a wasteful number, since it uses less digits than its factorization.

1230443120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21729 (or 21723 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1230443120 is about 35077.6726708030. The cubic root of 1230443120 is about 1071.5699201115.

Adding to 1230443120 its reverse (213440321), we get a palindrome (1443883441).

The spelling of 1230443120 in words is "one billion, two hundred thirty million, four hundred forty-three thousand, one hundred twenty".