1240838 has 8 divisors (see below), whose sum is σ = 1882440. Its totient is φ = 613360.

The previous prime is 1240831. The next prime is 1240859. The reversal of 1240838 is 8380421.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3308 + ... + 3663.

It is an arithmetic number, because the mean of its divisors is an integer number (235305).

2^1240838 is an apocalyptic number.

1240838 is a deficient number, since it is larger than the sum of its proper divisors (641602).

1240838 is an equidigital number, since it uses as much as digits as its factorization.

1240838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7062.

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 1240838 is about 1113.9290821233. The cubic root of 1240838 is about 107.4579031132.

The spelling of 1240838 in words is "one million, two hundred forty thousand, eight hundred thirty-eight".