1272845233 has 16 divisors (see below), whose sum is σ = 1471481856. Its totient is φ = 1088144640.

The previous prime is 1272845227. The next prime is 1272845237. The reversal of 1272845233 is 3325482721.

It is not a de Polignac number, because 1272845233 - 2⁹ = 1272844721 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1272845192 and 1272845201.

It is not an unprimeable number, because it can be changed into a prime (1272845237) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 308935 + ... + 313027.

It is an arithmetic number, because the mean of its divisors is an integer number (91967616).

Almost surely, 2^1272845233 is an apocalyptic number.

It is an amenable number.

1272845233 is a deficient number, since it is larger than the sum of its proper divisors (198636623).

1272845233 is a wasteful number, since it uses less digits than its factorization.

1272845233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5784.

The product of its digits is 80640, while the sum is 37.

The square root of 1272845233 is about 35676.9566106752. The cubic root of 1272845233 is about 1083.7402420513.

The spelling of 1272845233 in words is "one billion, two hundred seventy-two million, eight hundred forty-five thousand, two hundred thirty-three".