1240006 has 4 divisors (see below), whose sum is σ = 1860012. Its totient is φ = 620002.

The previous prime is 1239989. The next prime is 1240007. The reversal of 1240006 is 6000421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6000421 = 7 ⋅857203.

It is a super-2 number, since 2×1240006² = 3075229760072, which contains 22 as substring.

It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310000 + ... + 310003.

It is an arithmetic number, because the mean of its divisors is an integer number (465003).

2^1240006 is an apocalyptic number.

1240006 is a deficient number, since it is larger than the sum of its proper divisors (620006).

1240006 is an equidigital number, since it uses as much as digits as its factorization.

1240006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620005.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1240006 is about 1113.5555666423. Note that the first 4 decimals coincide. The cubic root of 1240006 is about 107.4338803788.

Adding to 1240006 its reverse (6000421), we get a palindrome (7240427).

The spelling of 1240006 in words is "one million, two hundred forty thousand, six".