1243533134 has 16 divisors (see below), whose sum is σ = 1963632672. Its totient is φ = 589467648.

The previous prime is 1243533091. The next prime is 1243533167. The reversal of 1243533134 is 4313353421.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1243533097 and 1243533106.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114419 + ... + 124814.

It is an arithmetic number, because the mean of its divisors is an integer number (122727042).

Almost surely, 2^1243533134 is an apocalyptic number.

1243533134 is a deficient number, since it is larger than the sum of its proper divisors (720099538).

1243533134 is a wasteful number, since it uses less digits than its factorization.

1243533134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239371.

The product of its digits is 12960, while the sum is 29.

The square root of 1243533134 is about 35263.7651704976. The cubic root of 1243533134 is about 1075.3564735224.

Adding to 1243533134 its reverse (4313353421), we get a palindrome (5556886555).

The spelling of 1243533134 in words is "one billion, two hundred forty-three million, five hundred thirty-three thousand, one hundred thirty-four".