6421426 has 16 divisors (see below), whose sum is σ = 10582848. Its totient is φ = 2898000.

The previous prime is 6421421. The next prime is 6421477. The reversal of 6421426 is 6241246.

It is a self number, because there is not a number n which added to its sum of digits gives 6421426.

It is not an unprimeable number, because it can be changed into a prime (6421421) 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, 2356 + ... + 4288.

It is an arithmetic number, because the mean of its divisors is an integer number (661428).

Almost surely, 2^6421426 is an apocalyptic number.

6421426 is a deficient number, since it is larger than the sum of its proper divisors (4161422).

6421426 is a wasteful number, since it uses less digits than its factorization.

6421426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2097.

The product of its digits is 2304, while the sum is 25.

The square root of 6421426 is about 2534.0532748938. The cubic root of 6421426 is about 185.8705114853.

The spelling of 6421426 in words is "six million, four hundred twenty-one thousand, four hundred twenty-six".