1249249 has 8 divisors (see below), whose sum is σ = 1286120. Its totient is φ = 1213056.

The previous prime is 1249247. The next prime is 1249273. The reversal of 1249249 is 9429421.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 208849 + 1040400 = 457^2 + 1020^2 .

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

It is a 6-Lehmer number, since φ(1249249) divides (1249249-1)⁶.

It is a cyclic number.

It is not a de Polignac number, because 1249249 - 2¹ = 1249247 is a prime.

It is a Duffinian number.

1249249 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1249249.

It is not an unprimeable number, because it can be changed into a prime (1249243) 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, 7879 + ... + 8035.

It is an arithmetic number, because the mean of its divisors is an integer number (160765).

2^1249249 is an apocalyptic number.

It is an amenable number.

1249249 is a deficient number, since it is larger than the sum of its proper divisors (36871).

1249249 is a wasteful number, since it uses less digits than its factorization.

1249249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339.

The product of its digits is 5184, while the sum is 31.

The square root of 1249249 is about 1117.6980808787. The cubic root of 1249249 is about 107.7001571071.

The spelling of 1249249 in words is "one million, two hundred forty-nine thousand, two hundred forty-nine".