421260347 has 2 divisors, whose sum is σ = 421260348. Its totient is φ = 421260346.

The previous prime is 421260319. The next prime is 421260353. The reversal of 421260347 is 743062124.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 421260347 - 2⁶ = 421260283 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (421260317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210630173 + 210630174.

It is an arithmetic number, because the mean of its divisors is an integer number (210630174).

Almost surely, 2^421260347 is an apocalyptic number.

421260347 is a deficient number, since it is larger than the sum of its proper divisors (1).

421260347 is an equidigital number, since it uses as much as digits as its factorization.

421260347 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 421260347 is about 20524.6278163576. The cubic root of 421260347 is about 749.6355841486.

The spelling of 421260347 in words is "four hundred twenty-one million, two hundred sixty thousand, three hundred forty-seven".