1240918 has 16 divisors (see below), whose sum is σ = 2145024. Its totient is φ = 527400.

The previous prime is 1240861. The next prime is 1240931. The reversal of 1240918 is 8190421.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1240892 and 1240901.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1821 + ... + 2407.

It is an arithmetic number, because the mean of its divisors is an integer number (134064).

2^1240918 is an apocalyptic number.

1240918 is a deficient number, since it is larger than the sum of its proper divisors (904106).

1240918 is a wasteful number, since it uses less digits than its factorization.

1240918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 747.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 1240918 is about 1113.9649904732. The cubic root of 1240918 is about 107.4602124256.

The spelling of 1240918 in words is "one million, two hundred forty thousand, nine hundred eighteen".