1243222134 has 32 divisors (see below), whose sum is σ = 3099983616. Its totient is φ = 322914720.

The previous prime is 1243222133. The next prime is 1243222139. The reversal of 1243222134 is 4312223421.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243222133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1345017 + ... + 1345940.

It is an arithmetic number, because the mean of its divisors is an integer number (96874488).

Almost surely, 2^1243222134 is an apocalyptic number.

1243222134 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1243222134 is an abundant number, since it is smaller than the sum of its proper divisors (1856761482).

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

1243222134 is a wasteful number, since it uses less digits than its factorization.

1243222134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2690980.

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

The square root of 1243222134 is about 35259.3552692048. The cubic root of 1243222134 is about 1075.2668193647.

Adding to 1243222134 its reverse (4312223421), we get a palindrome (5555445555).

The spelling of 1243222134 in words is "one billion, two hundred forty-three million, two hundred twenty-two thousand, one hundred thirty-four".