1243234133 has 2 divisors, whose sum is σ = 1243234134. Its totient is φ = 1243234132.

The previous prime is 1243234121. The next prime is 1243234183. The reversal of 1243234133 is 3314323421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1243056049 + 178084 = 35257^2 + 422^2 .

It is a cyclic number.

It is not a de Polignac number, because 1243234133 - 2⁴ = 1243234117 is a prime.

It is a super-2 number, since 2×1243234133² = 3091262218912523378, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1243234183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621617066 + 621617067.

It is an arithmetic number, because the mean of its divisors is an integer number (621617067).

Almost surely, 2^1243234133 is an apocalyptic number.

It is an amenable number.

1243234133 is a deficient number, since it is larger than the sum of its proper divisors (1).

1243234133 is an equidigital number, since it uses as much as digits as its factorization.

1243234133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 26.

The square root of 1243234133 is about 35259.5254222175. The cubic root of 1243234133 is about 1075.2702786781.

Adding to 1243234133 its reverse (3314323421), we get a palindrome (4557557554).

The spelling of 1243234133 in words is "one billion, two hundred forty-three million, two hundred thirty-four thousand, one hundred thirty-three".