1240447 has 4 divisors (see below), whose sum is σ = 1335880. Its totient is φ = 1145016.

The previous prime is 1240423. The next prime is 1240483. The reversal of 1240447 is 7440421.

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

It is a cyclic number.

It is not a de Polignac number, because 1240447 - 2⁷ = 1240319 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47697 + ... + 47722.

It is an arithmetic number, because the mean of its divisors is an integer number (333970).

2^1240447 is an apocalyptic number.

1240447 is a deficient number, since it is larger than the sum of its proper divisors (95433).

1240447 is an equidigital number, since it uses as much as digits as its factorization.

1240447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95432.

The product of its (nonzero) digits is 896, while the sum is 22.

The square root of 1240447 is about 1113.7535634062. The cubic root of 1240447 is about 107.4466149209.

Adding to 1240447 its reverse (7440421), we get a palindrome (8680868).

The spelling of 1240447 in words is "one million, two hundred forty thousand, four hundred forty-seven".