6420430 has 16 divisors (see below), whose sum is σ = 11677680. Its totient is φ = 2541312.

The previous prime is 6420413. The next prime is 6420431. The reversal of 6420430 is 340246.

It is a junction number, because it is equal to n+sod(n) for n = 6420398 and 6420407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6420431) 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, 2340 + ... + 4279.

It is an arithmetic number, because the mean of its divisors is an integer number (729855).

Almost surely, 2^6420430 is an apocalyptic number.

6420430 is a deficient number, since it is larger than the sum of its proper divisors (5257250).

6420430 is a wasteful number, since it uses less digits than its factorization.

6420430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6723.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 6420430 is about 2533.8567441748. The cubic root of 6420430 is about 185.8609011276.

Adding to 6420430 its reverse (340246), we get a palindrome (6760676).

The spelling of 6420430 in words is "six million, four hundred twenty thousand, four hundred thirty".