1243052133 has 4 divisors (see below), whose sum is σ = 1657402848. Its totient is φ = 828701420.

The previous prime is 1243052131. The next prime is 1243052137. The reversal of 1243052133 is 3312503421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1243052133 - 2¹ = 1243052131 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243052131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 207175353 + ... + 207175358.

It is an arithmetic number, because the mean of its divisors is an integer number (414350712).

Almost surely, 2^1243052133 is an apocalyptic number.

It is an amenable number.

1243052133 is a deficient number, since it is larger than the sum of its proper divisors (414350715).

1243052133 is an equidigital number, since it uses as much as digits as its factorization.

1243052133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414350714.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 1243052133 is about 35256.9444648852. The cubic root of 1243052133 is about 1075.2178056601.

Adding to 1243052133 its reverse (3312503421), we get a palindrome (4555555554).

The spelling of 1243052133 in words is "one billion, two hundred forty-three million, fifty-two thousand, one hundred thirty-three".