1143223242 has 128 divisors (see below), whose sum is σ = 2842656768. Its totient is φ = 299136000.

The previous prime is 1143223231. The next prime is 1143223243. The reversal of 1143223242 is 2423223411.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1143223243) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5985367 + ... + 5985557.

It is an arithmetic number, because the mean of its divisors is an integer number (22208256).

Almost surely, 2^1143223242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1143223242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1421328384).

1143223242 is an abundant number, since it is smaller than the sum of its proper divisors (1699433526).

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

1143223242 is a wasteful number, since it uses less digits than its factorization.

1143223242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404.

The product of its digits is 2304, while the sum is 24.

The square root of 1143223242 is about 33811.5844349241. The cubic root of 1143223242 is about 1045.6275442878.

Adding to 1143223242 its reverse (2423223411), we get a palindrome (3566446653).

The spelling of 1143223242 in words is "one billion, one hundred forty-three million, two hundred twenty-three thousand, two hundred forty-two".