1240416 has 72 divisors (see below), whose sum is σ = 3636360. Its totient is φ = 400896.

The previous prime is 1240399. The next prime is 1240423. The reversal of 1240416 is 6140421.

It is a tau number, because it is divible by the number of its divisors (72).

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 11 ways as a sum of consecutive naturals, for example, 16956 + ... + 17028.

It is an arithmetic number, because the mean of its divisors is an integer number (50505).

2^1240416 is an apocalyptic number.

1240416 is a gapful number since it is divisible by the number (16) 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 1240416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1818180).

1240416 is an abundant number, since it is smaller than the sum of its proper divisors (2395944).

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

1240416 is a wasteful number, since it uses less digits than its factorization.

1240416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148 (or 137 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1240416 is about 1113.7396464165. The cubic root of 1240416 is about 107.4457198476.

Adding to 1240416 its reverse (6140421), we get a palindrome (7380837).

The spelling of 1240416 in words is "one million, two hundred forty thousand, four hundred sixteen".