40120129896 has 128 divisors (see below), whose sum is σ = 131631436800. Its totient is φ = 9872340480.

The previous prime is 40120129883. The next prime is 40120129921. The reversal of 40120129896 is 69892102104.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 536205 + ... + 606428.

It is an arithmetic number, because the mean of its divisors is an integer number (1028370600).

Almost surely, 2^40120129896 is an apocalyptic number.

It is an amenable number.

40120129896 is an abundant number, since it is smaller than the sum of its proper divisors (91511306904).

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

40120129896 is a wasteful number, since it uses less digits than its factorization.

40120129896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1142679 (or 1142675 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 42.

The spelling of 40120129896 in words is "forty billion, one hundred twenty million, one hundred twenty-nine thousand, eight hundred ninety-six".