43421212324440 has 96 divisors (see below), whose sum is σ = 141258801434400. Its totient is φ = 11567514147840.

The previous prime is 43421212324439. The next prime is 43421212324489. The reversal of 43421212324440 is 4442321212434.

43421212324440 is a `hidden beast` number, since 4 + 342 + 1 + 2 + 1 + 232 + 44 + 40 = 666.

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 = 43421212324395 and 43421212324404.

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, 59406076 + ... + 60132555.

It is an arithmetic number, because the mean of its divisors is an integer number (1471445848275).

Almost surely, 2^{43421212324440} is an apocalyptic number.

43421212324440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43421212324440 is an abundant number, since it is smaller than the sum of its proper divisors (97837589109960).

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

43421212324440 is a wasteful number, since it uses less digits than its factorization.

43421212324440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119539657 (or 119539650 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 36.

Adding to 43421212324440 its reverse (4442321212434), we get a palindrome (47863533536874).

The spelling of 43421212324440 in words is "forty-three trillion, four hundred twenty-one billion, two hundred twelve million, three hundred twenty-four thousand, four hundred forty".