1275345079 has 4 divisors (see below), whose sum is σ = 1287972360. Its totient is φ = 1262717800.

The previous prime is 1275345061. The next prime is 1275345131. The reversal of 1275345079 is 9705435721.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1275345079 - 2⁷ = 1275344951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1275345679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6313489 + ... + 6313690.

It is an arithmetic number, because the mean of its divisors is an integer number (321993090).

Almost surely, 2^1275345079 is an apocalyptic number.

1275345079 is a deficient number, since it is larger than the sum of its proper divisors (12627281).

1275345079 is a wasteful number, since it uses less digits than its factorization.

1275345079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12627280.

The product of its (nonzero) digits is 264600, while the sum is 43.

The square root of 1275345079 is about 35711.9738883193. The cubic root of 1275345079 is about 1084.4492604443.

The spelling of 1275345079 in words is "one billion, two hundred seventy-five million, three hundred forty-five thousand, seventy-nine".