1270321056 has 240 divisors, whose sum is σ = 4004453376. Its totient is φ = 393652224.

The previous prime is 1270321051. The next prime is 1270321067. The reversal of 1270321056 is 6501230721.

It is a happy number.

It is a super-2 number, since 2×1270321056² = 3227431170633910272, which contains 22 as substring.

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

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (1270321051) 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 39 ways as a sum of consecutive naturals, for example, 5596015 + ... + 5596241.

Almost surely, 2^1270321056 is an apocalyptic number.

1270321056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1270321056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2002226688).

1270321056 is an abundant number, since it is smaller than the sum of its proper divisors (2734132320).

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

1270321056 is a wasteful number, since it uses less digits than its factorization.

1270321056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393 (or 376 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 1270321056 is about 35641.5636020644. The cubic root of 1270321056 is about 1083.0233802244.

Adding to 1270321056 its reverse (6501230721), we get a palindrome (7771551777).

The spelling of 1270321056 in words is "one billion, two hundred seventy million, three hundred twenty-one thousand, fifty-six".