6420419 has 4 divisors (see below), whose sum is σ = 6425496. Its totient is φ = 6415344.

The previous prime is 6420413. The next prime is 6420431. The reversal of 6420419 is 9140246.

6420419 is nontrivially palindromic in base 2.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6420419 is a prime.

It is a super-2 number, since 2×6420419² = 82443560271122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6420413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1052 + ... + 3734.

It is an arithmetic number, because the mean of its divisors is an integer number (1606374).

Almost surely, 2^6420419 is an apocalyptic number.

6420419 is a deficient number, since it is larger than the sum of its proper divisors (5077).

6420419 is a wasteful number, since it uses less digits than its factorization.

6420419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5076.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 6420419 is about 2533.8545735697. The cubic root of 6420419 is about 185.8607949836.

The spelling of 6420419 in words is "six million, four hundred twenty thousand, four hundred nineteen".