1421056 has 72 divisors (see below), whose sum is σ = 3548384. Its totient is φ = 552960.

The previous prime is 1421041. The next prime is 1421083. The reversal of 1421056 is 6501241.

It is a zygodrome in base 4.

It is a congruent number.

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, 23266 + ... + 23326.

2^1421056 is an apocalyptic number.

1421056 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 1421056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1774192).

1421056 is an abundant number, since it is smaller than the sum of its proper divisors (2127328).

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

1421056 is an equidigital number, since it uses as much as digits as its factorization.

1421056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97 (or 83 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1421056 is about 1192.0805341922. The cubic root of 1421056 is about 112.4269418663.

Adding to 1421056 its reverse (6501241), we get a palindrome (7922297).

The spelling of 1421056 in words is "one million, four hundred twenty-one thousand, fifty-six".