1260342155 has 8 divisors (see below), whose sum is σ = 1578167712. Its totient is φ = 964435648.

The previous prime is 1260342151. The next prime is 1260342163. The reversal of 1260342155 is 5512430621.

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 1260342155 - 2² = 1260342151 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1260342151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5479634 + ... + 5479863.

It is an arithmetic number, because the mean of its divisors is an integer number (197270964).

Almost surely, 2^1260342155 is an apocalyptic number.

1260342155 is a deficient number, since it is larger than the sum of its proper divisors (317825557).

1260342155 is a wasteful number, since it uses less digits than its factorization.

1260342155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10959525.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 1260342155 is about 35501.2979340193. The cubic root of 1260342155 is about 1080.1800554280.

Adding to 1260342155 its reverse (5512430621), we get a palindrome (6772772776).

The spelling of 1260342155 in words is "one billion, two hundred sixty million, three hundred forty-two thousand, one hundred fifty-five".