8420419 has 8 divisors (see below), whose sum is σ = 9642240. Its totient is φ = 7203336.

The previous prime is 8420413. The next prime is 8420441. The reversal of 8420419 is 9140248.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-8420419 is a prime.

It is a super-2 number, since 2×8420419² = 141806912271122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8420413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4392 + ... + 6010.

It is an arithmetic number, because the mean of its divisors is an integer number (1205280).

Almost surely, 2^8420419 is an apocalyptic number.

8420419 is a deficient number, since it is larger than the sum of its proper divisors (1221821).

8420419 is a wasteful number, since it uses less digits than its factorization.

8420419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2369.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 8420419 is about 2901.7958232791. The cubic root of 8420419 is about 203.4438507562.

It can be divided in two parts, 84 and 20419, that added together give a triangular number (20503 = T₂₀₂).

The spelling of 8420419 in words is "eight million, four hundred twenty thousand, four hundred nineteen".