420420179 has 2 divisors, whose sum is σ = 420420180. Its totient is φ = 420420178.

The previous prime is 420420157. The next prime is 420420241. The reversal of 420420179 is 971024024.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 420420179 - 2¹⁶ = 420354643 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (420420379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210210089 + 210210090.

It is an arithmetic number, because the mean of its divisors is an integer number (210210090).

Almost surely, 2^420420179 is an apocalyptic number.

420420179 is a deficient number, since it is larger than the sum of its proper divisors (1).

420420179 is an equidigital number, since it uses as much as digits as its factorization.

420420179 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 420420179 is about 20504.1502871980. The cubic root of 420420179 is about 749.1368909566.

The spelling of 420420179 in words is "four hundred twenty million, four hundred twenty thousand, one hundred seventy-nine".