1271452387 has 2 divisors, whose sum is σ = 1271452388. Its totient is φ = 1271452386.

The previous prime is 1271452373. The next prime is 1271452421. The reversal of 1271452387 is 7832541721.

It is a weak prime.

It is an emirp because it is prime and its reverse (7832541721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1271452387 - 2¹¹ = 1271450339 is a prime.

It is not a weakly prime, because it can be changed into another prime (1271452327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 635726193 + 635726194.

It is an arithmetic number, because the mean of its divisors is an integer number (635726194).

Almost surely, 2^1271452387 is an apocalyptic number.

1271452387 is a deficient number, since it is larger than the sum of its proper divisors (1).

1271452387 is an equidigital number, since it uses as much as digits as its factorization.

1271452387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 94080, while the sum is 40.

The square root of 1271452387 is about 35657.4310207564. The cubic root of 1271452387 is about 1083.3447935566.

The spelling of 1271452387 in words is "one billion, two hundred seventy-one million, four hundred fifty-two thousand, three hundred eighty-seven".