1260540355 has 8 divisors (see below), whose sum is σ = 1513112112. Its totient is φ = 1008123168.

The previous prime is 1260540343. The next prime is 1260540371. The reversal of 1260540355 is 5530450621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1260540355 - 2⁹ = 1260539843 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19869 + ... + 53998.

It is an arithmetic number, because the mean of its divisors is an integer number (189139014).

Almost surely, 2^1260540355 is an apocalyptic number.

1260540355 is a deficient number, since it is larger than the sum of its proper divisors (252571757).

1260540355 is an equidigital number, since it uses as much as digits as its factorization.

1260540355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77285.

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 1260540355 is about 35504.0892715191. The cubic root of 1260540355 is about 1080.2366750965.

Adding to 1260540355 its reverse (5530450621), we get a palindrome (6790990976).

The spelling of 1260540355 in words is "one billion, two hundred sixty million, five hundred forty thousand, three hundred fifty-five".