1249239 has 4 divisors (see below), whose sum is σ = 1665656. Its totient is φ = 832824.

The previous prime is 1249217. The next prime is 1249243. The reversal of 1249239 is 9329421.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1249239 - 2⁷ = 1249111 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1249139) 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 3 ways as a sum of consecutive naturals, for example, 208204 + ... + 208209.

It is an arithmetic number, because the mean of its divisors is an integer number (416414).

2^1249239 is an apocalyptic number.

1249239 is a deficient number, since it is larger than the sum of its proper divisors (416417).

1249239 is an equidigital number, since it uses as much as digits as its factorization.

1249239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416416.

The product of its digits is 3888, while the sum is 30.

The square root of 1249239 is about 1117.6936073898. The cubic root of 1249239 is about 107.6998697332.

The spelling of 1249239 in words is "one million, two hundred forty-nine thousand, two hundred thirty-nine".