6420126 has 8 divisors (see below), whose sum is σ = 12840264. Its totient is φ = 2140040.

The previous prime is 6420109. The next prime is 6420173. The reversal of 6420126 is 6210246.

It is a happy number.

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

6420126 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 535005 + ... + 535016.

It is an arithmetic number, because the mean of its divisors is an integer number (1605033).

Almost surely, 2^6420126 is an apocalyptic number.

6420126 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.

6420126 is a wasteful number, since it uses less digits than its factorization.

6420126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1070026.

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

The square root of 6420126 is about 2533.7967558587. The cubic root of 6420126 is about 185.8579676478.

The spelling of 6420126 in words is "six million, four hundred twenty thousand, one hundred twenty-six".