1142142222 has 48 divisors (see below), whose sum is σ = 2485099008. Its totient is φ = 349783200.

The previous prime is 1142142217. The next prime is 1142142227. The reversal of 1142142222 is 2222412411.

It is an interprime number because it is at equal distance from previous prime (1142142217) and next prime (1142142227).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142142227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 223597 + ... + 228647.

It is an arithmetic number, because the mean of its divisors is an integer number (51772896).

Almost surely, 2^1142142222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1142142222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1242549504).

1142142222 is an abundant number, since it is smaller than the sum of its proper divisors (1342956786).

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

1142142222 is a wasteful number, since it uses less digits than its factorization.

1142142222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5305 (or 5292 counting only the distinct ones).

The product of its digits is 512, while the sum is 21.

The square root of 1142142222 is about 33795.5947129208. The cubic root of 1142142222 is about 1045.2978621767.

Adding to 1142142222 its reverse (2222412411), we get a palindrome (3364554633).

The spelling of 1142142222 in words is "one billion, one hundred forty-two million, one hundred forty-two thousand, two hundred twenty-two".