420134147 has 2 divisors, whose sum is σ = 420134148. Its totient is φ = 420134146.

The previous prime is 420134111. The next prime is 420134189. The reversal of 420134147 is 741431024.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 420134147 - 2⁶ = 420134083 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (420134047) 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, 210067073 + 210067074.

It is an arithmetic number, because the mean of its divisors is an integer number (210067074).

Almost surely, 2^420134147 is an apocalyptic number.

420134147 is a deficient number, since it is larger than the sum of its proper divisors (1).

420134147 is an equidigital number, since it uses as much as digits as its factorization.

420134147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 420134147 is about 20497.1741223028. The cubic root of 420134147 is about 748.9669611684.

The spelling of 420134147 in words is "four hundred twenty million, one hundred thirty-four thousand, one hundred forty-seven".