420538379 has 2 divisors, whose sum is σ = 420538380. Its totient is φ = 420538378.

The previous prime is 420538357. The next prime is 420538399. The reversal of 420538379 is 973835024.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 420538379 - 2⁸ = 420538123 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (420538319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210269189 + 210269190.

It is an arithmetic number, because the mean of its divisors is an integer number (210269190).

Almost surely, 2^420538379 is an apocalyptic number.

420538379 is a deficient number, since it is larger than the sum of its proper divisors (1).

420538379 is an equidigital number, since it uses as much as digits as its factorization.

420538379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 41.

The square root of 420538379 is about 20507.0324279258. The cubic root of 420538379 is about 749.2070903174.

The spelling of 420538379 in words is "four hundred twenty million, five hundred thirty-eight thousand, three hundred seventy-nine".