420893147 has 2 divisors, whose sum is σ = 420893148. Its totient is φ = 420893146.

The previous prime is 420893071. The next prime is 420893171. The reversal of 420893147 is 741398024.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 420893147 - 2⁸ = 420892891 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 420893147.

It is not a weakly prime, because it can be changed into another prime (420893177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210446573 + 210446574.

It is an arithmetic number, because the mean of its divisors is an integer number (210446574).

Almost surely, 2^420893147 is an apocalyptic number.

420893147 is a deficient number, since it is larger than the sum of its proper divisors (1).

420893147 is an equidigital number, since it uses as much as digits as its factorization.

420893147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 420893147 is about 20515.6805151572. The cubic root of 420893147 is about 749.4177092188.

The spelling of 420893147 in words is "four hundred twenty million, eight hundred ninety-three thousand, one hundred forty-seven".