1142133244 has 60 divisors (see below), whose sum is σ = 2418872624. Its totient is φ = 462241728.

The previous prime is 1142133227. The next prime is 1142133247. The reversal of 1142133244 is 4423312411.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142133247) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3648832 + ... + 3649144.

Almost surely, 2^1142133244 is an apocalyptic number.

1142133244 is a gapful number since it is divisible by the number (14) 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 1142133244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1209436312).

1142133244 is an abundant number, since it is smaller than the sum of its proper divisors (1276739380).

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

1142133244 is an frugal number, since it uses more digits than its factorization.

1142133244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400 (or 341 counting only the distinct ones).

The product of its digits is 2304, while the sum is 25.

The square root of 1142133244 is about 33795.4618846969. The cubic root of 1142133244 is about 1045.2951232566.

Adding to 1142133244 its reverse (4423312411), we get a palindrome (5565445655).

The spelling of 1142133244 in words is "one billion, one hundred forty-two million, one hundred thirty-three thousand, two hundred forty-four".