1285050 has 48 divisors (see below), whose sum is σ = 3437280. Its totient is φ = 315840.

The previous prime is 1285049. The next prime is 1285051. The reversal of 1285050 is 505821.

It is an interprime number because it is at equal distance from previous prime (1285049) and next prime (1285051).

It is not an unprimeable number, because it can be changed into a prime (1285051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1621 + ... + 2279.

It is an arithmetic number, because the mean of its divisors is an integer number (71610).

2^1285050 is an apocalyptic number.

1285050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1285050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1718640).

1285050 is an abundant number, since it is smaller than the sum of its proper divisors (2152230).

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

1285050 is a wasteful number, since it uses less digits than its factorization.

1285050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 687 (or 682 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 1285050 is about 1133.6004587155. The cubic root of 1285050 is about 108.7193069677.

The spelling of 1285050 in words is "one million, two hundred eighty-five thousand, fifty".