421260319 has 2 divisors, whose sum is σ = 421260320. Its totient is φ = 421260318.

The previous prime is 421260317. The next prime is 421260347. The reversal of 421260319 is 913062124.

It is an a-pointer prime, because the next prime (421260347) can be obtained adding 421260319 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 421260319 - 2¹ = 421260317 is a prime.

It is a super-2 number, since 2×421260319² = 354920512727963522, which contains 22 as substring.

Together with 421260317, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

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, 210630159 + 210630160.

It is an arithmetic number, because the mean of its divisors is an integer number (210630160).

Almost surely, 2^421260319 is an apocalyptic number.

421260319 is a deficient number, since it is larger than the sum of its proper divisors (1).

421260319 is an equidigital number, since it uses as much as digits as its factorization.

421260319 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 421260319 is about 20524.6271342502. The cubic root of 421260319 is about 749.6355675399.

The spelling of 421260319 in words is "four hundred twenty-one million, two hundred sixty thousand, three hundred nineteen".