1261056 has 40 divisors (see below), whose sum is σ = 3363624. Its totient is φ = 419840.

The previous prime is 1261033. The next prime is 1261069. The reversal of 1261056 is 6501621.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1126 + ... + 1946.

2^1261056 is an apocalyptic number.

1261056 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 1261056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1681812).

1261056 is an abundant number, since it is smaller than the sum of its proper divisors (2102568).

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

1261056 is an frugal number, since it uses more digits than its factorization.

1261056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 842 (or 826 counting only the distinct ones).

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

The square root of 1261056 is about 1122.9674973035. The cubic root of 1261056 is about 108.0383951277.

Adding to 1261056 its reverse (6501621), we get a palindrome (7762677).

The spelling of 1261056 in words is "one million, two hundred sixty-one thousand, fifty-six".