421466291 has 2 divisors, whose sum is σ = 421466292. Its totient is φ = 421466290.

The previous prime is 421466257. The next prime is 421466299. The reversal of 421466291 is 192664124.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 421466291 - 2²⁶ = 354357427 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (421466299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210733145 + 210733146.

It is an arithmetic number, because the mean of its divisors is an integer number (210733146).

Almost surely, 2^421466291 is an apocalyptic number.

421466291 is a deficient number, since it is larger than the sum of its proper divisors (1).

421466291 is an equidigital number, since it uses as much as digits as its factorization.

421466291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 35.

The square root of 421466291 is about 20529.6442005214. The cubic root of 421466291 is about 749.7577238188.

The spelling of 421466291 in words is "four hundred twenty-one million, four hundred sixty-six thousand, two hundred ninety-one".