1240421304304 has 120 divisors (see below), whose sum is σ = 3015534889248. Its totient is φ = 489935900160.

The previous prime is 1240421304301. The next prime is 1240421304319. The reversal of 1240421304304 is 4034031240421.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240421304301) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6334714 + ... + 6527590.

Almost surely, 2^{1240421304304} is an apocalyptic number.

1240421304304 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 1240421304304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1507767444624).

1240421304304 is an abundant number, since it is smaller than the sum of its proper divisors (1775113584944).

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

1240421304304 is a wasteful number, since it uses less digits than its factorization.

1240421304304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193543 (or 193530 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 1240421304304 its reverse (4034031240421), we get a palindrome (5274452544725).

The spelling of 1240421304304 in words is "one trillion, two hundred forty billion, four hundred twenty-one million, three hundred four thousand, three hundred four".