1260231156 has 24 divisors (see below), whose sum is σ = 3267266240. Its totient is φ = 420077016.

The previous prime is 1260231151. The next prime is 1260231239. The reversal of 1260231156 is 6511320621.

1260231156 is a `hidden beast` number, since 1 + 2 + 602 + 3 + 1 + 1 + 56 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1260231151) 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, 5834296 + ... + 5834511.

Almost surely, 2^1260231156 is an apocalyptic number.

It is an amenable number.

1260231156 is an abundant number, since it is smaller than the sum of its proper divisors (2007035084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1260231156 is a wasteful number, since it uses less digits than its factorization.

1260231156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11668820 (or 11668812 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 1260231156 is about 35499.7345905572. The cubic root of 1260231156 is about 1080.1483438208.

Adding to 1260231156 its reverse (6511320621), we get a palindrome (7771551777).

The spelling of 1260231156 in words is "one billion, two hundred sixty million, two hundred thirty-one thousand, one hundred fifty-six".