1240018 has 16 divisors (see below), whose sum is σ = 2058840. Its totient is φ = 556416.

The previous prime is 1240013. The next prime is 1240021. The reversal of 1240018 is 8100421.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1194649 + 45369 = 1093^2 + 213^2 .

It is a zygodrome in base 9.

It is a junction number, because it is equal to n+sod(n) for n = 1239983 and 1240010.

It is not an unprimeable number, because it can be changed into a prime (1240013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 318 + ... + 1606.

2^1240018 is an apocalyptic number.

1240018 is a deficient number, since it is larger than the sum of its proper divisors (818822).

1240018 is a wasteful number, since it uses less digits than its factorization.

1240018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1341.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 1240018 is about 1113.5609547753. The cubic root of 1240018 is about 107.4342269369.

Adding to 1240018 its reverse (8100421), we get a palindrome (9340439).

The spelling of 1240018 in words is "one million, two hundred forty thousand, eighteen".