420917377 has 2 divisors, whose sum is σ = 420917378. Its totient is φ = 420917376.

The previous prime is 420917369. The next prime is 420917389. The reversal of 420917377 is 773719024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 331822656 + 89094721 = 18216^2 + 9439^2 .

It is a cyclic number.

It is not a de Polignac number, because 420917377 - 2³ = 420917369 is a prime.

It is not a weakly prime, because it can be changed into another prime (420917327) 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, 210458688 + 210458689.

It is an arithmetic number, because the mean of its divisors is an integer number (210458689).

Almost surely, 2^420917377 is an apocalyptic number.

It is an amenable number.

420917377 is a deficient number, since it is larger than the sum of its proper divisors (1).

420917377 is an equidigital number, since it uses as much as digits as its factorization.

420917377 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 74088, while the sum is 40.

The square root of 420917377 is about 20516.2710305747. The cubic root of 420917377 is about 749.4320897829.

The spelling of 420917377 in words is "four hundred twenty million, nine hundred seventeen thousand, three hundred seventy-seven".