40431304140420 has 48 divisors (see below), whose sum is σ = 119866925219328. Its totient is φ = 10147464568320.

The previous prime is 40431304140413. The next prime is 40431304140449. The reversal of 40431304140420 is 2404140313404.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19819265716 + ... + 19819267755.

It is an arithmetic number, because the mean of its divisors is an integer number (2497227608736).

Almost surely, 2^{40431304140420} is an apocalyptic number.

It is an amenable number.

40431304140420 is an abundant number, since it is smaller than the sum of its proper divisors (79435621078908).

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

40431304140420 is a wasteful number, since it uses less digits than its factorization.

40431304140420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39638533500 (or 39638533498 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 40431304140420 its reverse (2404140313404), we get a palindrome (42835444453824).

The spelling of 40431304140420 in words is "forty trillion, four hundred thirty-one billion, three hundred four million, one hundred forty thousand, four hundred twenty".