40121043433 has 2 divisors, whose sum is σ = 40121043434. Its totient is φ = 40121043432.

The previous prime is 40121043421. The next prime is 40121043527. The reversal of 40121043433 is 33434012104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39627670489 + 493372944 = 199067^2 + 22212^2 .

It is a cyclic number.

It is not a de Polignac number, because 40121043433 - 2¹⁷ = 40120912361 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40121043398 and 40121043407.

It is not a weakly prime, because it can be changed into another prime (40121044433) 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 as a sum of consecutive naturals, namely, 20060521716 + 20060521717.

It is an arithmetic number, because the mean of its divisors is an integer number (20060521717).

Almost surely, 2^40121043433 is an apocalyptic number.

It is an amenable number.

40121043433 is a deficient number, since it is larger than the sum of its proper divisors (1).

40121043433 is an equidigital number, since it uses as much as digits as its factorization.

40121043433 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 40121043433 its reverse (33434012104), we get a palindrome (73555055537).

The spelling of 40121043433 in words is "forty billion, one hundred twenty-one million, forty-three thousand, four hundred thirty-three".