1260001056 has 48 divisors (see below), whose sum is σ = 3331679904. Its totient is φ = 416930304.

The previous prime is 1260001049. The next prime is 1260001073. The reversal of 1260001056 is 6501000621.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×1260001056² = 3175205322242230272, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34750 + ... + 61053.

It is an arithmetic number, because the mean of its divisors is an integer number (69409998).

Almost surely, 2^1260001056 is an apocalyptic number.

1260001056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1260001056 is an abundant number, since it is smaller than the sum of its proper divisors (2071678848).

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

1260001056 is a wasteful number, since it uses less digits than its factorization.

1260001056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95953 (or 95945 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 1260001056 is about 35496.4935733095. The cubic root of 1260001056 is about 1080.0825999925.

Adding to 1260001056 its reverse (6501000621), we get a palindrome (7761001677).

The spelling of 1260001056 in words is "one billion, two hundred sixty million, one thousand, fifty-six".