1249039 has 8 divisors (see below), whose sum is σ = 1370880. Its totient is φ = 1128600.

The previous prime is 1249037. The next prime is 1249043. The reversal of 1249039 is 9309421.

It is a happy number.

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

It is not a de Polignac number, because 1249039 - 2¹ = 1249037 is a prime.

It is a Duffinian number.

1249039 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1248998 and 1249016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1249033) 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, 2772 + ... + 3190.

It is an arithmetic number, because the mean of its divisors is an integer number (171360).

2^1249039 is an apocalyptic number.

1249039 is a deficient number, since it is larger than the sum of its proper divisors (121841).

1249039 is a wasteful number, since it uses less digits than its factorization.

1249039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 1249039 is about 1117.6041338506. The cubic root of 1249039 is about 107.6941219344.

The spelling of 1249039 in words is "one million, two hundred forty-nine thousand, thirty-nine".