1249985 has 8 divisors (see below), whose sum is σ = 1636416. Its totient is φ = 909040.

The previous prime is 1249943. The next prime is 1249999. The reversal of 1249985 is 5899421.

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

It is not a de Polignac number, because 1249985 - 2⁶ = 1249921 is a prime.

It is a Duffinian 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, 11309 + ... + 11418.

It is an arithmetic number, because the mean of its divisors is an integer number (204552).

2^1249985 is an apocalyptic number.

It is an amenable number.

1249985 is a deficient number, since it is larger than the sum of its proper divisors (386431).

1249985 is a wasteful number, since it uses less digits than its factorization.

1249985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22743.

The product of its digits is 25920, while the sum is 38.

The square root of 1249985 is about 1118.0272805258. The cubic root of 1249985 is about 107.7213036129.

The spelling of 1249985 in words is "one million, two hundred forty-nine thousand, nine hundred eighty-five".