1240344 has 96 divisors (see below), whose sum is σ = 4043520. Its totient is φ = 335808.

The previous prime is 1240333. The next prime is 1240361. The reversal of 1240344 is 4430421.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11539 + ... + 11645.

It is an arithmetic number, because the mean of its divisors is an integer number (42120).

2^1240344 is an apocalyptic number.

1240344 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1240344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2021760).

1240344 is an abundant number, since it is smaller than the sum of its proper divisors (2803176).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1240344 is a wasteful number, since it uses less digits than its factorization.

1240344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149 (or 142 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 1240344 is about 1113.7073224146. The cubic root of 1240344 is about 107.4436409102.

Adding to 1240344 its reverse (4430421), we get a palindrome (5670765).

The spelling of 1240344 in words is "one million, two hundred forty thousand, three hundred forty-four".