1143244020 has 48 divisors (see below), whose sum is σ = 3208016448. Its totient is φ = 304204800.

The previous prime is 1143243989. The next prime is 1143244051. The reversal of 1143244020 is 204423411.

It is an interprime number because it is at equal distance from previous prime (1143243989) and next prime (1143244051).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7620 + ... + 48420.

It is an arithmetic number, because the mean of its divisors is an integer number (66833676).

Almost surely, 2^1143244020 is an apocalyptic number.

1143244020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1143244020 is an abundant number, since it is smaller than the sum of its proper divisors (2064772428).

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

1143244020 is a wasteful number, since it uses less digits than its factorization.

1143244020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41280 (or 41278 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 1143244020 is about 33811.8916950827. The cubic root of 1143244020 is about 1045.6338789845.

Adding to 1143244020 its reverse (204423411), we get a palindrome (1347667431).

The spelling of 1143244020 in words is "one billion, one hundred forty-three million, two hundred forty-four thousand, twenty".