40121545252 has 12 divisors (see below), whose sum is σ = 70479674496. Its totient is φ = 19984495400.

The previous prime is 40121545241. The next prime is 40121545279. The reversal of 40121545252 is 25254512104.

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 3 ways as a sum of consecutive naturals, for example, 19068124 + ... + 19070227.

It is an arithmetic number, because the mean of its divisors is an integer number (5873306208).

Almost surely, 2^40121545252 is an apocalyptic number.

It is an amenable number.

40121545252 is a deficient number, since it is larger than the sum of its proper divisors (30358129244).

40121545252 is a wasteful number, since it uses less digits than its factorization.

40121545252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38138618 (or 38138616 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 31.

The spelling of 40121545252 in words is "forty billion, one hundred twenty-one million, five hundred forty-five thousand, two hundred fifty-two".