1260540371 has 2 divisors, whose sum is σ = 1260540372. Its totient is φ = 1260540370.

The previous prime is 1260540343. The next prime is 1260540373. The reversal of 1260540371 is 1730450621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1260540371 - 2¹⁴ = 1260523987 is a prime.

It is a Sophie Germain prime.

Together with 1260540373, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1260540373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 630270185 + 630270186.

It is an arithmetic number, because the mean of its divisors is an integer number (630270186).

Almost surely, 2^1260540371 is an apocalyptic number.

1260540371 is a deficient number, since it is larger than the sum of its proper divisors (1).

1260540371 is an equidigital number, since it uses as much as digits as its factorization.

1260540371 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 1260540371 is about 35504.0894968453. The cubic root of 1260540371 is about 1080.2366796670.

Adding to 1260540371 its reverse (1730450621), we get a palindrome (2990990992).

The spelling of 1260540371 in words is "one billion, two hundred sixty million, five hundred forty thousand, three hundred seventy-one".