40521089420 has 48 divisors (see below), whose sum is σ = 97407932160. Its totient is φ = 13870471104.

The previous prime is 40521089377. The next prime is 40521089429. The reversal of 40521089420 is 2498012504.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is not an unprimeable number, because it can be changed into a prime (40521089429) 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 15 ways as a sum of consecutive naturals, for example, 147134 + ... + 320453.

It is an arithmetic number, because the mean of its divisors is an integer number (2029331920).

Almost surely, 2^40521089420 is an apocalyptic number.

It is an amenable number.

40521089420 is an abundant number, since it is smaller than the sum of its proper divisors (56886842740).

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

40521089420 is a wasteful number, since it uses less digits than its factorization.

40521089420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468222 (or 468220 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The spelling of 40521089420 in words is "forty billion, five hundred twenty-one million, eighty-nine thousand, four hundred twenty".