40421023043 has 2 divisors, whose sum is σ = 40421023044. Its totient is φ = 40421023042.

The previous prime is 40421023021. The next prime is 40421023079. The reversal of 40421023043 is 34032012404.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40421023043 - 2⁶ = 40421022979 is a prime.

It is not a weakly prime, because it can be changed into another prime (40421023343) 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, 20210511521 + 20210511522.

It is an arithmetic number, because the mean of its divisors is an integer number (20210511522).

Almost surely, 2^40421023043 is an apocalyptic number.

40421023043 is a deficient number, since it is larger than the sum of its proper divisors (1).

40421023043 is an equidigital number, since it uses as much as digits as its factorization.

40421023043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 40421023043 its reverse (34032012404), we get a palindrome (74453035447).

The spelling of 40421023043 in words is "forty billion, four hundred twenty-one million, twenty-three thousand, forty-three".