1260144156 has 24 divisors (see below), whose sum is σ = 2941125264. Its totient is φ = 419935360.

The previous prime is 1260144121. The next prime is 1260144157. The reversal of 1260144156 is 6514410621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1260144157) by changing a digit.

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, 41176 + ... + 64928.

It is an arithmetic number, because the mean of its divisors is an integer number (122546886).

Almost surely, 2^1260144156 is an apocalyptic number.

It is an amenable number.

1260144156 is an abundant number, since it is smaller than the sum of its proper divisors (1680981108).

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

1260144156 is a wasteful number, since it uses less digits than its factorization.

1260144156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28181 (or 28179 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 1260144156 is about 35498.5092081344. The cubic root of 1260144156 is about 1080.1234872517.

Adding to 1260144156 its reverse (6514410621), we get a palindrome (7774554777).

The spelling of 1260144156 in words is "one billion, two hundred sixty million, one hundred forty-four thousand, one hundred fifty-six".