421475419 has 2 divisors, whose sum is σ = 421475420. Its totient is φ = 421475418.

The previous prime is 421475389. The next prime is 421475443. The reversal of 421475419 is 914574124.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421475419 is a prime.

It is a super-2 number, since 2×421475419² = 355283057642451122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (421475459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210737709 + 210737710.

It is an arithmetic number, because the mean of its divisors is an integer number (210737710).

Almost surely, 2^421475419 is an apocalyptic number.

421475419 is a deficient number, since it is larger than the sum of its proper divisors (1).

421475419 is an equidigital number, since it uses as much as digits as its factorization.

421475419 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40320, while the sum is 37.

The square root of 421475419 is about 20529.8665119869. The cubic root of 421475419 is about 749.7631364614.

The spelling of 421475419 in words is "four hundred twenty-one million, four hundred seventy-five thousand, four hundred nineteen".