420341567 has 2 divisors, whose sum is σ = 420341568. Its totient is φ = 420341566.

The previous prime is 420341561. The next prime is 420341639. The reversal of 420341567 is 765143024.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420341567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420341561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210170783 + 210170784.

It is an arithmetic number, because the mean of its divisors is an integer number (210170784).

Almost surely, 2^420341567 is an apocalyptic number.

420341567 is a deficient number, since it is larger than the sum of its proper divisors (1).

420341567 is an equidigital number, since it uses as much as digits as its factorization.

420341567 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 420341567 is about 20502.2332198227. The cubic root of 420341567 is about 749.0901957509.

The spelling of 420341567 in words is "four hundred twenty million, three hundred forty-one thousand, five hundred sixty-seven".