4060405421 has 2 divisors, whose sum is σ = 4060405422. Its totient is φ = 4060405420.

The previous prime is 4060405369. The next prime is 4060405457. The reversal of 4060405421 is 1245040604.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3104049796 + 956355625 = 55714^2 + 30925^2 .

It is a cyclic number.

It is not a de Polignac number, because 4060405421 - 2¹⁸ = 4060143277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4060495421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2030202710 + 2030202711.

It is an arithmetic number, because the mean of its divisors is an integer number (2030202711).

Almost surely, 2^4060405421 is an apocalyptic number.

It is an amenable number.

4060405421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4060405421 is an equidigital number, since it uses as much as digits as its factorization.

4060405421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 4060405421 is about 63721.3105718958. The cubic root of 4060405421 is about 1595.3517986595.

The spelling of 4060405421 in words is "four billion, sixty million, four hundred five thousand, four hundred twenty-one".