420220147 has 2 divisors, whose sum is σ = 420220148. Its totient is φ = 420220146.

The previous prime is 420220139. The next prime is 420220153. The reversal of 420220147 is 741022024.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 420220147 - 2³ = 420220139 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (420220187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210110073 + 210110074.

It is an arithmetic number, because the mean of its divisors is an integer number (210110074).

Almost surely, 2^420220147 is an apocalyptic number.

420220147 is a deficient number, since it is larger than the sum of its proper divisors (1).

420220147 is an equidigital number, since it uses as much as digits as its factorization.

420220147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 896, while the sum is 22.

The square root of 420220147 is about 20499.2718651176. The cubic root of 420220147 is about 749.0180613267.

The spelling of 420220147 in words is "four hundred twenty million, two hundred twenty thousand, one hundred forty-seven".