1275122712 has 64 divisors (see below), whose sum is σ = 3283117920. Its totient is φ = 412397568.

The previous prime is 1275122633. The next prime is 1275122729. The reversal of 1275122712 is 2172215721.

It is a self number, because there is not a number n which added to its sum of digits gives 1275122712.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 350728 + ... + 354344.

Almost surely, 2^1275122712 is an apocalyptic number.

1275122712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1275122712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1641558960).

1275122712 is an abundant number, since it is smaller than the sum of its proper divisors (2007995208).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1275122712 is a wasteful number, since it uses less digits than its factorization.

1275122712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4060 (or 4056 counting only the distinct ones).

The product of its digits is 3920, while the sum is 30.

The square root of 1275122712 is about 35708.8604130684. The cubic root of 1275122712 is about 1084.3862292043.

The spelling of 1275122712 in words is "one billion, two hundred seventy-five million, one hundred twenty-two thousand, seven hundred twelve".