1081249 has 8 divisors (see below), whose sum is σ = 1202432. Its totient is φ = 965520.

The previous prime is 1081247. The next prime is 1081277. The reversal of 1081249 is 9421801.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1081249 - 2¹ = 1081247 is a prime.

It is a Duffinian number.

1081249 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1081243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 939 + ... + 1744.

It is an arithmetic number, because the mean of its divisors is an integer number (150304).

2^1081249 is an apocalyptic number.

It is an amenable number.

1081249 is a deficient number, since it is larger than the sum of its proper divisors (121183).

1081249 is a wasteful number, since it uses less digits than its factorization.

1081249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2727.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 1081249 is about 1039.8312363071. The cubic root of 1081249 is about 102.6380926740.

The spelling of 1081249 in words is "one million, eighty-one thousand, two hundred forty-nine".