1143244120 has 16 divisors (see below), whose sum is σ = 2572299360. Its totient is φ = 457297632.

The previous prime is 1143244111. The next prime is 1143244129. The reversal of 1143244120 is 214423411.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1143244111) and next prime (1143244129).

It is a junction number, because it is equal to n+sod(n) for n = 1143244091 and 1143244100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143244129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14290512 + ... + 14290591.

It is an arithmetic number, because the mean of its divisors is an integer number (160768710).

Almost surely, 2^1143244120 is an apocalyptic number.

1143244120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1143244120 is an abundant number, since it is smaller than the sum of its proper divisors (1429055240).

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

1143244120 is a wasteful number, since it uses less digits than its factorization.

1143244120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28581114 (or 28581110 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 1143244120 is about 33811.8931738523. The cubic root of 1143244120 is about 1045.6339094719.

Adding to 1143244120 its reverse (214423411), we get a palindrome (1357667531).

The spelling of 1143244120 in words is "one billion, one hundred forty-three million, two hundred forty-four thousand, one hundred twenty".