421760329 has 2 divisors, whose sum is σ = 421760330. Its totient is φ = 421760328.

The previous prime is 421760321. The next prime is 421760359. The reversal of 421760329 is 923067124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 358079929 + 63680400 = 18923^2 + 7980^2 .

It is a cyclic number.

It is not a de Polignac number, because 421760329 - 2³ = 421760321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 421760294 and 421760303.

It is not a weakly prime, because it can be changed into another prime (421760321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210880164 + 210880165.

It is an arithmetic number, because the mean of its divisors is an integer number (210880165).

Almost surely, 2^421760329 is an apocalyptic number.

It is an amenable number.

421760329 is a deficient number, since it is larger than the sum of its proper divisors (1).

421760329 is an equidigital number, since it uses as much as digits as its factorization.

421760329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 421760329 is about 20536.8042548007. The cubic root of 421760329 is about 749.9320406570.

It can be divided in two parts, 4217 and 60329, that added together give a palindrome (64546).

The spelling of 421760329 in words is "four hundred twenty-one million, seven hundred sixty thousand, three hundred twenty-nine".