420376447 has 2 divisors, whose sum is σ = 420376448. Its totient is φ = 420376446.

The previous prime is 420376441. The next prime is 420376469. The reversal of 420376447 is 744673024.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 420376447 - 2¹¹ = 420374399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420376441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210188223 + 210188224.

It is an arithmetic number, because the mean of its divisors is an integer number (210188224).

Almost surely, 2^420376447 is an apocalyptic number.

420376447 is a deficient number, since it is larger than the sum of its proper divisors (1).

420376447 is an equidigital number, since it uses as much as digits as its factorization.

420376447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112896, while the sum is 37.

The square root of 420376447 is about 20503.0838412176. The cubic root of 420376447 is about 749.1109150463.

It can be divided in two parts, 42037 and 6447, that added together give a palindrome (48484).

The spelling of 420376447 in words is "four hundred twenty million, three hundred seventy-six thousand, four hundred forty-seven".