420875071 has 2 divisors, whose sum is σ = 420875072. Its totient is φ = 420875070.

The previous prime is 420875047. The next prime is 420875087. The reversal of 420875071 is 170578024.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 420875071 - 2²³ = 412486463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420875471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210437535 + 210437536.

It is an arithmetic number, because the mean of its divisors is an integer number (210437536).

Almost surely, 2^420875071 is an apocalyptic number.

420875071 is a deficient number, since it is larger than the sum of its proper divisors (1).

420875071 is an equidigital number, since it uses as much as digits as its factorization.

420875071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15680, while the sum is 34.

The square root of 420875071 is about 20515.2399693496. The cubic root of 420875071 is about 749.4069807092.

The spelling of 420875071 in words is "four hundred twenty million, eight hundred seventy-five thousand, seventy-one".