1240436 has 24 divisors (see below), whose sum is σ = 2304960. Its totient is φ = 582912.

The previous prime is 1240423. The next prime is 1240483. The reversal of 1240436 is 6340421.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8855 + ... + 8993.

It is an arithmetic number, because the mean of its divisors is an integer number (96040).

2^1240436 is an apocalyptic number.

It is an amenable number.

1240436 is a deficient number, since it is larger than the sum of its proper divisors (1064524).

1240436 is a wasteful number, since it uses less digits than its factorization.

1240436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263 (or 261 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1240436 is about 1113.7486251394. The cubic root of 1240436 is about 107.4462973159.

Adding to 1240436 its reverse (6340421), we get a palindrome (7580857).

The spelling of 1240436 in words is "one million, two hundred forty thousand, four hundred thirty-six".