6421026 has 8 divisors (see below), whose sum is σ = 12842064. Its totient is φ = 2140340.

The previous prime is 6421021. The next prime is 6421039. The reversal of 6421026 is 6201246.

It is a happy number.

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

6421026 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 6420993 and 6421011.

It is not an unprimeable number, because it can be changed into a prime (6421021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 535080 + ... + 535091.

It is an arithmetic number, because the mean of its divisors is an integer number (1605258).

Almost surely, 2^6421026 is an apocalyptic number.

6421026 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

6421026 is a wasteful number, since it uses less digits than its factorization.

6421026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1070176.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 6421026 is about 2533.9743487257. The cubic root of 6421026 is about 185.8666520233.

The spelling of 6421026 in words is "six million, four hundred twenty-one thousand, twenty-six".