1241805 has 8 divisors (see below), whose sum is σ = 1986912. Its totient is φ = 662288.

The previous prime is 1241789. The next prime is 1241813. The reversal of 1241805 is 5081421.

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

It is a cyclic number.

It is not a de Polignac number, because 1241805 - 2⁴ = 1241789 is a prime.

It is a congruent 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, 41379 + ... + 41408.

It is an arithmetic number, because the mean of its divisors is an integer number (248364).

2^1241805 is an apocalyptic number.

1241805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1241805 is a deficient number, since it is larger than the sum of its proper divisors (745107).

1241805 is an equidigital number, since it uses as much as digits as its factorization.

1241805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82795.

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 1241805 is about 1114.3630467671. The cubic root of 1241805 is about 107.4858102778.

The spelling of 1241805 in words is "one million, two hundred forty-one thousand, eight hundred five".