40230434040021 has 6 divisors (see below), whose sum is σ = 58110626946710. Its totient is φ = 26820289360008.

The previous prime is 40230434040007. The next prime is 40230434040067. The reversal of 40230434040021 is 12004043403204.

It is a happy number.

40230434040021 is a `hidden beast` number, since 4 + 0 + 230 + 4 + 3 + 4 + 0 + 400 + 21 = 666.

40230434040021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 31400176059396 + 8830257980625 = 5603586^2 + 2971575^2 .

It is not a de Polignac number, because 40230434040021 - 2⁷ = 40230434039893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40230434040091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2235024113326 + ... + 2235024113343.

Almost surely, 2^{40230434040021} is an apocalyptic number.

It is an amenable number.

40230434040021 is a deficient number, since it is larger than the sum of its proper divisors (17880192906689).

40230434040021 is a wasteful number, since it uses less digits than its factorization.

40230434040021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4470048226675 (or 4470048226672 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 40230434040021 its reverse (12004043403204), we get a palindrome (52234477443225).

The spelling of 40230434040021 in words is "forty trillion, two hundred thirty billion, four hundred thirty-four million, forty thousand, twenty-one".