4024040010021 has 6 divisors (see below), whose sum is σ = 5812502236710. Its totient is φ = 2682693340008.

The previous prime is 4024040009981. The next prime is 4024040010031. The reversal of 4024040010021 is 1200100404204.

4024040010021 is a `hidden beast` number, since 4 + 0 + 240 + 400 + 1 + 0 + 0 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 4022692092225 + 1347917796 = 2005665^2 + 36714^2 .

It is not a de Polignac number, because 4024040010021 - 2⁷ = 4024040009893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4024040009976 and 4024040010003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4024040010031) 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, 223557778326 + ... + 223557778343.

It is an arithmetic number, because the mean of its divisors is an integer number (968750372785).

Almost surely, 2^{4024040010021} is an apocalyptic number.

It is an amenable number.

4024040010021 is a deficient number, since it is larger than the sum of its proper divisors (1788462226689).

4024040010021 is a wasteful number, since it uses less digits than its factorization.

4024040010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447115556675 (or 447115556672 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 4024040010021 its reverse (1200100404204), we get a palindrome (5224140414225).

The spelling of 4024040010021 in words is "four trillion, twenty-four billion, forty million, ten thousand, twenty-one".