40121043321 has 8 divisors (see below), whose sum is σ = 56310236320. Its totient is φ = 25339606272.

The previous prime is 40121043299. The next prime is 40121043331. The reversal of 40121043321 is 12334012104.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40121043321 - 2⁵ = 40121043289 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40121043331) 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, 351938920 + ... + 351939033.

It is an arithmetic number, because the mean of its divisors is an integer number (7038779540).

Almost surely, 2^40121043321 is an apocalyptic number.

It is an amenable number.

40121043321 is a deficient number, since it is larger than the sum of its proper divisors (16189192999).

40121043321 is a wasteful number, since it uses less digits than its factorization.

40121043321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703877975.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 40121043321 its reverse (12334012104), we get a palindrome (52455055425).

The spelling of 40121043321 in words is "forty billion, one hundred twenty-one million, forty-three thousand, three hundred twenty-one".