43321234404240 has 640 divisors, whose sum is σ = 161597957068800. Its totient is φ = 10603998074880.

The previous prime is 43321234404233. The next prime is 43321234404247. The reversal of 43321234404240 is 4240443212334.

43321234404240 is a `hidden beast` number, since 4 + 3 + 3 + 2 + 1 + 2 + 3 + 4 + 404 + 240 = 666.

It is an interprime number because it is at equal distance from previous prime (43321234404233) and next prime (43321234404247).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 43321234404195 and 43321234404204.

It is not an unprimeable number, because it can be changed into a prime (43321234404247) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3692879175 + ... + 3692890905.

It is an arithmetic number, because the mean of its divisors is an integer number (252496807920).

Almost surely, 2^{43321234404240} is an apocalyptic number.

43321234404240 is a gapful number since it is divisible by the number (40) 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 43321234404240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80798978534400).

43321234404240 is an abundant number, since it is smaller than the sum of its proper divisors (118276722664560).

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

43321234404240 is a wasteful number, since it uses less digits than its factorization.

43321234404240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12492 (or 12480 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 36.

Adding to 43321234404240 its reverse (4240443212334), we get a palindrome (47561677616574).

The spelling of 43321234404240 in words is "forty-three trillion, three hundred twenty-one billion, two hundred thirty-four million, four hundred four thousand, two hundred forty".