6420426 has 16 divisors (see below), whose sum is σ = 13284000. Its totient is φ = 2066288.

The previous prime is 6420413. The next prime is 6420431. The reversal of 6420426 is 6240246.

It is a junction number, because it is equal to n+sod(n) for n = 6420396 and 6420405.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18276 + ... + 18623.

It is an arithmetic number, because the mean of its divisors is an integer number (830250).

Almost surely, 2^6420426 is an apocalyptic number.

6420426 is an abundant number, since it is smaller than the sum of its proper divisors (6863574).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6420426 is a wasteful number, since it uses less digits than its factorization.

6420426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36933.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 6420426 is about 2533.8559548640. The cubic root of 6420426 is about 185.8608625298.

The spelling of 6420426 in words is "six million, four hundred twenty thousand, four hundred twenty-six".