1142043300 has 180 divisors, whose sum is σ = 3722717460. Its totient is φ = 302849280.

The previous prime is 1142043293. The next prime is 1142043313. The reversal of 1142043300 is 33402411.

It can be written as a sum of positive squares in 6 ways, for example, as 25948836 + 1116094464 = 5094^2 + 33408^2 .

It is a tau number, because it is divible by the number of its divisors (180).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 2243446 + ... + 2243954.

Almost surely, 2^1142043300 is an apocalyptic number.

1142043300 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 1142043300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1861358730).

1142043300 is an abundant number, since it is smaller than the sum of its proper divisors (2580674160).

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

1142043300 is a wasteful number, since it uses less digits than its factorization.

1142043300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812 (or 796 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1142043300 is about 33794.1311472865. The cubic root of 1142043300 is about 1045.2676832321.

Adding to 1142043300 its reverse (33402411), we get a palindrome (1175445711).

The spelling of 1142043300 in words is "one billion, one hundred forty-two million, forty-three thousand, three hundred".