1272506065 has 8 divisors (see below), whose sum is σ = 1527891840. Its totient is φ = 1017415152.

The previous prime is 1272506023. The next prime is 1272506077. The reversal of 1272506065 is 5606052721.

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

It is a cyclic number.

It is not a de Polignac number, because 1272506065 - 2¹⁷ = 1272374993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1272506065.

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, 64105 + ... + 81574.

It is an arithmetic number, because the mean of its divisors is an integer number (190986480).

Almost surely, 2^1272506065 is an apocalyptic number.

It is an amenable number.

1272506065 is a deficient number, since it is larger than the sum of its proper divisors (255385775).

1272506065 is a wasteful number, since it uses less digits than its factorization.

1272506065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147431.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 1272506065 is about 35672.2029737441. The cubic root of 1272506065 is about 1083.6439740857.

Adding to 1272506065 its reverse (5606052721), we get a palindrome (6878558786).

The spelling of 1272506065 in words is "one billion, two hundred seventy-two million, five hundred six thousand, sixty-five".