40431421323240 has 32 divisors (see below), whose sum is σ = 121294263970080. Its totient is φ = 10781712352832.

The previous prime is 40431421323221. The next prime is 40431421323281. The reversal of 40431421323240 is 4232312413404.

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, 168464255394 + ... + 168464255633.

It is an arithmetic number, because the mean of its divisors is an integer number (3790445749065).

Almost surely, 2^{40431421323240} is an apocalyptic number.

40431421323240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40431421323240 is an abundant number, since it is smaller than the sum of its proper divisors (80862842646840).

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

40431421323240 is a wasteful number, since it uses less digits than its factorization.

40431421323240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336928511041 (or 336928511037 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 33.

Adding to 40431421323240 its reverse (4232312413404), we get a palindrome (44663733736644).

The spelling of 40431421323240 in words is "forty trillion, four hundred thirty-one billion, four hundred twenty-one million, three hundred twenty-three thousand, two hundred forty".