1143221442 has 32 divisors (see below), whose sum is σ = 2496191040. Its totient is φ = 346168320.

The previous prime is 1143221437. The next prime is 1143221461. The reversal of 1143221442 is 2441223411.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92458 + ... + 104090.

It is an arithmetic number, because the mean of its divisors is an integer number (78005970).

Almost surely, 2^1143221442 is an apocalyptic number.

1143221442 is an abundant number, since it is smaller than the sum of its proper divisors (1352969598).

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

1143221442 is a wasteful number, since it uses less digits than its factorization.

1143221442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13138.

The product of its digits is 1536, while the sum is 24.

The square root of 1143221442 is about 33811.5578168176. The cubic root of 1143221442 is about 1045.6269955089.

Adding to 1143221442 its reverse (2441223411), we get a palindrome (3584444853).

The spelling of 1143221442 in words is "one billion, one hundred forty-three million, two hundred twenty-one thousand, four hundred forty-two".