1275493056 has 56 divisors (see below), whose sum is σ = 3388004400. Its totient is φ = 423493632.

The previous prime is 1275493031. The next prime is 1275493057. The reversal of 1275493056 is 6503945721.

It is a junction number, because it is equal to n+sod(n) for n = 1275492999 and 1275493017.

It is not an unprimeable number, because it can be changed into a prime (1275493057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36420 + ... + 62268.

Almost surely, 2^1275493056 is an apocalyptic number.

1275493056 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 1275493056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1694002200).

1275493056 is an abundant number, since it is smaller than the sum of its proper divisors (2112511344).

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

1275493056 is a wasteful number, since it uses less digits than its factorization.

1275493056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26121 (or 26111 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 42.

The square root of 1275493056 is about 35714.0456403360. The cubic root of 1275493056 is about 1084.4912013393.

The spelling of 1275493056 in words is "one billion, two hundred seventy-five million, four hundred ninety-three thousand, fifty-six".