1249856 has 28 divisors (see below), whose sum is σ = 2529840. Its totient is φ = 612480.

The previous prime is 1249849. The next prime is 1249861. The reversal of 1249856 is 6589421.

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, 3611 + ... + 3941.

2^1249856 is an apocalyptic number.

1249856 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 1249856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1264920).

1249856 is an abundant number, since it is smaller than the sum of its proper divisors (1279984).

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

1249856 is an equidigital number, since it uses as much as digits as its factorization.

1249856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402 (or 392 counting only the distinct ones).

The product of its digits is 17280, while the sum is 35.

The square root of 1249856 is about 1117.9695881374. The cubic root of 1249856 is about 107.7175978281.

The spelling of 1249856 in words is "one million, two hundred forty-nine thousand, eight hundred fifty-six".