420956911 has 2 divisors, whose sum is σ = 420956912. Its totient is φ = 420956910.

The previous prime is 420956903. The next prime is 420956929. The reversal of 420956911 is 119659024.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 420956911 - 2³ = 420956903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420956981) 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, 210478455 + 210478456.

It is an arithmetic number, because the mean of its divisors is an integer number (210478456).

Almost surely, 2^420956911 is an apocalyptic number.

420956911 is a deficient number, since it is larger than the sum of its proper divisors (1).

420956911 is an equidigital number, since it uses as much as digits as its factorization.

420956911 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 420956911 is about 20517.2344871330. The cubic root of 420956911 is about 749.4555521236.

The spelling of 420956911 in words is "four hundred twenty million, nine hundred fifty-six thousand, nine hundred eleven".