1243134222 has 64 divisors (see below), whose sum is σ = 2845269504. Its totient is φ = 358413440.

The previous prime is 1243134187. The next prime is 1243134229. The reversal of 1243134222 is 2224313421.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1243134192 and 1243134201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243134229) 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 31 ways as a sum of consecutive naturals, for example, 296968 + ... + 301124.

It is an arithmetic number, because the mean of its divisors is an integer number (44457336).

Almost surely, 2^1243134222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1243134222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1422634752).

1243134222 is an abundant number, since it is smaller than the sum of its proper divisors (1602135282).

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

1243134222 is a wasteful number, since it uses less digits than its factorization.

1243134222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4393.

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

The square root of 1243134222 is about 35258.1085992995. The cubic root of 1243134222 is about 1075.2414736435.

Adding to 1243134222 its reverse (2224313421), we get a palindrome (3467447643).

The spelling of 1243134222 in words is "one billion, two hundred forty-three million, one hundred thirty-four thousand, two hundred twenty-two".