421685359 has 2 divisors, whose sum is σ = 421685360. Its totient is φ = 421685358.

The previous prime is 421685353. The next prime is 421685387. The reversal of 421685359 is 953586124.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 421685359 - 2³ = 421685351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421685351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210842679 + 210842680.

It is an arithmetic number, because the mean of its divisors is an integer number (210842680).

Almost surely, 2^421685359 is an apocalyptic number.

421685359 is a deficient number, since it is larger than the sum of its proper divisors (1).

421685359 is an equidigital number, since it uses as much as digits as its factorization.

421685359 is an evil number, because the sum of its binary digits is even.

The product of its digits is 259200, while the sum is 43.

The square root of 421685359 is about 20534.9789140384. The cubic root of 421685359 is about 749.8876033050.

The spelling of 421685359 in words is "four hundred twenty-one million, six hundred eighty-five thousand, three hundred fifty-nine".