1275128075 has 12 divisors (see below), whose sum is σ = 1702786848. Its totient is φ = 941632800.

The previous prime is 1275128069. The next prime is 1275128083. The reversal of 1275128075 is 5708215721.

It is not a de Polignac number, because 1275128075 - 2⁴ = 1275128059 is a prime.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1961411 + ... + 1962060.

It is an arithmetic number, because the mean of its divisors is an integer number (141898904).

Almost surely, 2^1275128075 is an apocalyptic number.

1275128075 is a deficient number, since it is larger than the sum of its proper divisors (427658773).

1275128075 is a wasteful number, since it uses less digits than its factorization.

1275128075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3923494 (or 3923489 counting only the distinct ones).

The product of its (nonzero) digits is 39200, while the sum is 38.

The square root of 1275128075 is about 35708.9355063967. The cubic root of 1275128075 is about 1084.3877494646.

The spelling of 1275128075 in words is "one billion, two hundred seventy-five million, one hundred twenty-eight thousand, seventy-five".