1275277141 has 2 divisors, whose sum is σ = 1275277142. Its totient is φ = 1275277140.

The previous prime is 1275277127. The next prime is 1275277217. The reversal of 1275277141 is 1417725721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1219476241 + 55800900 = 34921^2 + 7470^2 .

It is an emirp because it is prime and its reverse (1417725721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1275277141 - 2²⁵ = 1241722709 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1275277141.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1275277111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 637638570 + 637638571.

It is an arithmetic number, because the mean of its divisors is an integer number (637638571).

Almost surely, 2^1275277141 is an apocalyptic number.

It is an amenable number.

1275277141 is a deficient number, since it is larger than the sum of its proper divisors (1).

1275277141 is an equidigital number, since it uses as much as digits as its factorization.

1275277141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27440, while the sum is 37.

The square root of 1275277141 is about 35711.0226820795. The cubic root of 1275277141 is about 1084.4300037942.

The spelling of 1275277141 in words is "one billion, two hundred seventy-five million, two hundred seventy-seven thousand, one hundred forty-one".