1244805 has 16 divisors (see below), whose sum is σ = 2056704. Its totient is φ = 642240.

The previous prime is 1244797. The next prime is 1244813. The reversal of 1244805 is 5084421.

It is an interprime number because it is at equal distance from previous prime (1244797) and next prime (1244813).

It is not a de Polignac number, because 1244805 - 2³ = 1244797 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 874 + ... + 1803.

It is an arithmetic number, because the mean of its divisors is an integer number (128544).

2^1244805 is an apocalyptic number.

1244805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1244805 is a deficient number, since it is larger than the sum of its proper divisors (811899).

1244805 is a wasteful number, since it uses less digits than its factorization.

1244805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2716.

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 1244805 is about 1115.7082952098. The cubic root of 1244805 is about 107.5722967794.

The spelling of 1244805 in words is "one million, two hundred forty-four thousand, eight hundred five".