421301071 has 2 divisors, whose sum is σ = 421301072. Its totient is φ = 421301070.

The previous prime is 421301063. The next prime is 421301093. The reversal of 421301071 is 170103124.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 421301071 - 2³ = 421301063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421301011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210650535 + 210650536.

It is an arithmetic number, because the mean of its divisors is an integer number (210650536).

Almost surely, 2^421301071 is an apocalyptic number.

421301071 is a deficient number, since it is larger than the sum of its proper divisors (1).

421301071 is an equidigital number, since it uses as much as digits as its factorization.

421301071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 421301071 is about 20525.6198688371. The cubic root of 421301071 is about 749.6597395797.

Adding to 421301071 its reverse (170103124), we get a palindrome (591404195).

The spelling of 421301071 in words is "four hundred twenty-one million, three hundred one thousand, seventy-one".