40121431396 has 24 divisors (see below), whose sum is σ = 73921942080. Its totient is φ = 19001277792.

The previous prime is 40121431387. The next prime is 40121431397. The reversal of 40121431396 is 69313412104.

It is not an unprimeable number, because it can be changed into a prime (40121431397) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 376185 + ... + 470911.

It is an arithmetic number, because the mean of its divisors is an integer number (3080080920).

Almost surely, 2^40121431396 is an apocalyptic number.

It is an amenable number.

40121431396 is a deficient number, since it is larger than the sum of its proper divisors (33800510684).

40121431396 is a wasteful number, since it uses less digits than its factorization.

40121431396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100323 (or 100321 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 34.

The spelling of 40121431396 in words is "forty billion, one hundred twenty-one million, four hundred thirty-one thousand, three hundred ninety-six".