40121005252 has 12 divisors (see below), whose sum is σ = 70252568316. Its totient is φ = 20048842880.

The previous prime is 40121005201. The next prime is 40121005271. The reversal of 40121005252 is 25250012104.

It can be written as a sum of positive squares in 2 ways, for example, as 24855414336 + 15265590916 = 157656^2 + 123554^2 .

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 3 ways as a sum of consecutive naturals, for example, 2907193 + ... + 2920960.

It is an arithmetic number, because the mean of its divisors is an integer number (5854380693).

Almost surely, 2^40121005252 is an apocalyptic number.

It is an amenable number.

40121005252 is a deficient number, since it is larger than the sum of its proper divisors (30131563064).

40121005252 is a wasteful number, since it uses less digits than its factorization.

40121005252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5829878 (or 5829876 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

Adding to 40121005252 its reverse (25250012104), we get a palindrome (65371017356).

The spelling of 40121005252 in words is "forty billion, one hundred twenty-one million, five thousand, two hundred fifty-two".