1275211267 has 4 divisors (see below), whose sum is σ = 1391139576. Its totient is φ = 1159282960.

The previous prime is 1275211261. The next prime is 1275211271. The reversal of 1275211267 is 7621125721.

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

It is a de Polignac number, because none of the positive numbers 2^k-1275211267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1275211261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57964138 + ... + 57964159.

It is an arithmetic number, because the mean of its divisors is an integer number (347784894).

Almost surely, 2^1275211267 is an apocalyptic number.

1275211267 is a deficient number, since it is larger than the sum of its proper divisors (115928309).

1275211267 is a wasteful number, since it uses less digits than its factorization.

1275211267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115928308.

The product of its digits is 11760, while the sum is 34.

The square root of 1275211267 is about 35710.1003499010. The cubic root of 1275211267 is about 1084.4113315203.

Adding to 1275211267 its reverse (7621125721), we get a palindrome (8896336988).

The spelling of 1275211267 in words is "one billion, two hundred seventy-five million, two hundred eleven thousand, two hundred sixty-seven".