1272583841 has 8 divisors (see below), whose sum is σ = 1347822504. Its totient is φ = 1197387520.

The previous prime is 1272583817. The next prime is 1272583889. The reversal of 1272583841 is 1483852721.

It can be written as a sum of positive squares in 4 ways, for example, as 778633216 + 493950625 = 27904^2 + 22225^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1272583841 - 2⁶ = 1272583777 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1272583441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68051 + ... + 84711.

It is an arithmetic number, because the mean of its divisors is an integer number (168477813).

Almost surely, 2^1272583841 is an apocalyptic number.

It is an amenable number.

1272583841 is a deficient number, since it is larger than the sum of its proper divisors (75238663).

1272583841 is a wasteful number, since it uses less digits than its factorization.

1272583841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21171.

The product of its digits is 107520, while the sum is 41.

The square root of 1272583841 is about 35673.2931056274. The cubic root of 1272583841 is about 1083.6660511977. Note that the first 3 decimals are identical.

The spelling of 1272583841 in words is "one billion, two hundred seventy-two million, five hundred eighty-three thousand, eight hundred forty-one".