421299419 has 2 divisors, whose sum is σ = 421299420. Its totient is φ = 421299418.

The previous prime is 421299413. The next prime is 421299449. The reversal of 421299419 is 914992124.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 421299419 - 2⁸ = 421299163 is a prime.

It is a super-3 number, since 3×421299419³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (421299413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210649709 + 210649710.

It is an arithmetic number, because the mean of its divisors is an integer number (210649710).

Almost surely, 2^421299419 is an apocalyptic number.

421299419 is a deficient number, since it is larger than the sum of its proper divisors (1).

421299419 is an equidigital number, since it uses as much as digits as its factorization.

421299419 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46656, while the sum is 41.

The square root of 421299419 is about 20525.5796264076. The cubic root of 421299419 is about 749.6587597266.

The spelling of 421299419 in words is "four hundred twenty-one million, two hundred ninety-nine thousand, four hundred nineteen".