1120043100 has 144 divisors (see below), whose sum is σ = 3555772416. Its totient is φ = 269952000.

The previous prime is 1120043083. The next prime is 1120043149. The reversal of 1120043100 is 13400211.

It is a happy number.

It is a super-2 number, since 2×1120043100² = 2508993091715220000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 629412 + ... + 631188.

It is an arithmetic number, because the mean of its divisors is an integer number (24692864).

Almost surely, 2^1120043100 is an apocalyptic number.

1120043100 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 1120043100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1777886208).

1120043100 is an abundant number, since it is smaller than the sum of its proper divisors (2435729316).

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

1120043100 is a wasteful number, since it uses less digits than its factorization.

1120043100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1996 (or 1989 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1120043100 is about 33467.0449845815. The cubic root of 1120043100 is about 1038.5121414193.

Adding to 1120043100 its reverse (13400211), we get a palindrome (1133443311).

The spelling of 1120043100 in words is "one billion, one hundred twenty million, forty-three thousand, one hundred".