1270841387 has 2 divisors, whose sum is σ = 1270841388. Its totient is φ = 1270841386.

The previous prime is 1270841357. The next prime is 1270841401. The reversal of 1270841387 is 7831480721.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1270841387 - 2⁶ = 1270841323 is a prime.

It is not a weakly prime, because it can be changed into another prime (1270841347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 635420693 + 635420694.

It is an arithmetic number, because the mean of its divisors is an integer number (635420694).

Almost surely, 2^1270841387 is an apocalyptic number.

1270841387 is a deficient number, since it is larger than the sum of its proper divisors (1).

1270841387 is an equidigital number, since it uses as much as digits as its factorization.

1270841387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75264, while the sum is 41.

The square root of 1270841387 is about 35648.8623521144. The cubic root of 1270841387 is about 1083.1712309617.

The spelling of 1270841387 in words is "one billion, two hundred seventy million, eight hundred forty-one thousand, three hundred eighty-seven".