4034042921 has 2 divisors, whose sum is σ = 4034042922. Its totient is φ = 4034042920.

The previous prime is 4034042861. The next prime is 4034042923. The reversal of 4034042921 is 1292404304.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4032250000 + 1792921 = 63500^2 + 1339^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4034042921 is a prime.

Together with 4034042923, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4034042923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2017021460 + 2017021461.

It is an arithmetic number, because the mean of its divisors is an integer number (2017021461).

Almost surely, 2^4034042921 is an apocalyptic number.

It is an amenable number.

4034042921 is a deficient number, since it is larger than the sum of its proper divisors (1).

4034042921 is an equidigital number, since it uses as much as digits as its factorization.

4034042921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 4034042921 is about 63514.1159192191. The cubic root of 4034042921 is about 1591.8916505861.

The spelling of 4034042921 in words is "four billion, thirty-four million, forty-two thousand, nine hundred twenty-one".