43423121433040 has 40 divisors (see below), whose sum is σ = 100959475063968. Its totient is φ = 17369125092480.

The previous prime is 43423121433031. The next prime is 43423121433101. The reversal of 43423121433040 is 4033412132434.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 43423121432987 and 43423121433005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9839955 + ... + 13552525.

Almost surely, 2^{43423121433040} is an apocalyptic number.

43423121433040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43423121433040 is an abundant number, since it is smaller than the sum of its proper divisors (57536353630928).

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

43423121433040 is a wasteful number, since it uses less digits than its factorization.

43423121433040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3858787 (or 3858781 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 34.

Adding to 43423121433040 its reverse (4033412132434), we get a palindrome (47456533565474).

The spelling of 43423121433040 in words is "forty-three trillion, four hundred twenty-three billion, one hundred twenty-one million, four hundred thirty-three thousand, forty".